Wooroolin

2011 Census All persons QuickStats
Geography type State Suburbs
Area code SSC31817
People 316
Male 164
Female 152
Median age 42
Families 92
Average children per family 2
All private dwellings 153
Average people per household 2.3
Median weekly household income $883
Median monthly mortgage repayments $845
Median weekly rent $210
Average motor vehicles per dwelling 2.1

Search all persons QuickStats for another area

Map is loading.
Other 2011 Census products available for this area:
To view more QuickStats or Community Profiles for a different area, see Search Census data.

People

demographics & education | cultural & language diversity | employment

Demographics & education

People Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Total 316 -- 4,332,739 -- 21,507,717 --
Male 164 51.9 2,148,221 49.6 10,634,013 49.4
Female 152 48.1 2,184,518 50.4 10,873,704 50.6
 null  null  null  null  null  null  null
Aboriginal and/or Torres Strait Islander people 9 2.9 155,825 3.6 548,369 2.5

In the 2011 Census, there were 316 people in Wooroolin of these 51.9% were male and 48.1% were female. Aboriginal and/or Torres Strait Islander people made up 2.9% of the population.

Age
People
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
0-4 years 26 8.2 297,893 6.9 1,421,050 6.6
5-9 years 22 6.9 286,989 6.6 1,351,921 6.3
10-14 years 18 5.7 290,982 6.7 1,371,054 6.4
15-19 years 18 5.7 293,917 6.8 1,405,798 6.5
20-24 years 11 3.5 293,845 6.8 1,460,673 6.8
25-29 years 18 5.7 300,709 6.9 1,513,236 7.0
30-34 years 17 5.4 286,697 6.6 1,453,775 6.8
35-39 years 21 6.6 308,180 7.1 1,520,138 7.1
40-44 years 12 3.8 312,567 7.2 1,542,879 7.2
45-49 years 22 6.9 302,744 7.0 1,504,142 7.0
50-54 years 24 7.6 288,140 6.7 1,447,404 6.7
55-59 years 39 12.3 257,962 6.0 1,297,244 6.0
60-64 years 22 6.9 243,125 5.6 1,206,116 5.6
65-69 years 18 5.7 185,758 4.3 919,319 4.3
70-74 years 15 4.7 136,885 3.2 708,090 3.3
75-79 years 8 2.5 99,572 2.3 545,263 2.5
80-84 years 3 0.9 76,971 1.8 436,936 2.0
85 years and over 3 0.9 69,801 1.6 402,681 1.9
Median age 42 -- 36 -- 37 --

The median age of people in Wooroolin was 42 years. Children aged 0 - 14 years made up 19.4% of the population and people aged 65 years and over made up 14.3% of the population.

Registered marital status
People aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Married 132 52.6 1,655,245 47.9 8,461,114 48.7
Separated 12 4.8 114,427 3.3 529,280 3.0
Divorced 26 10.4 314,681 9.1 1,460,899 8.4
Widowed 10 4.0 173,469 5.0 949,634 5.5
Never married 71 28.3 1,199,054 34.7 5,962,769 34.3

Of people in Wooroolin aged 15 years and over, 52.6% were married and 14.7% were either divorced or separated.

Median age by registered marital status
People aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Married 55 -- 50 -- 50 --
Separated 0 -- 48 -- 49 --
Divorced 62 -- 54 -- 54 --
Widowed 66 -- 77 -- 78 --
Never married 28 -- 25 -- 25 --

The median age of married people in Wooroolin was 55 years and the median age of people never married was 28 years.

Social marital status
People aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Registered marriage 122 53.7 1,487,139 48.4 7,647,042 49.2
De facto marriage 28 12.3 342,988 11.2 1,476,369 9.5
Not married 77 33.9 1,239,440 40.4 6,413,399 41.3

In Wooroolin, of people aged 15 years and over, 53.7% of people were in a registered marriage and 12.3% were in a de facto marriage.

Median age by social marital status
People aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Registered marriage 56 -- 50 -- 50 --
De facto marriage 31 -- 34 -- 35 --
Not married 47 -- 33 -- 33 --

The median age of people in a registered marriage in Wooroolin was 56 years and the median age of people in a de facto marriage was 31 years.

Education Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Pre-school 0 0.0 50,615 3.9 332,844 5.1
Primary - Government 27 36.0 258,616 20.2 1,181,787 18.2
Primary - Catholic 0 0.0 72,713 5.7 359,062 5.5
Primary - Other Non Government 3 4.0 48,450 3.8 214,359 3.3
Secondary - Government 17 22.7 154,133 12.0 774,074 11.9
Secondary - Catholic 3 4.0 51,966 4.1 307,142 4.7
Secondary - Other Non Government 0 0.0 52,454 4.1 254,828 3.9
Technical or further education institution 6 8.0 79,238 6.2 473,606 7.3
University or tertiary institution 0 0.0 173,433 13.5 932,524 14.3
Other 0 0.0 28,841 2.2 161,660 2.5
Not Stated 19 25.3 311,791 24.3 1,511,694 23.2
Total 75 -- 1,282,250 -- 6,503,580 --

In Wooroolin 24.2% of people were attending an educational institution. Of these, 37.0% were in primary school, 26.0% in secondary school and 12.3% in a tertiary or technical institution.

Cultural & language diversity

Ancestry, top responses Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
English 153 35.7 1,629,463 28.1 7,238,533 25.9
Australian 128 29.9 1,587,992 27.4 7,098,486 25.4
German 41 9.6 270,890 4.7 898,674 3.2
Scottish 39 9.1 421,004 7.3 1,792,622 6.4
Irish 15 3.5 484,929 8.4 2,087,758 7.5

The most common ancestries in Wooroolin were English 35.7%, Australian 29.9%, German 9.6%, Scottish 9.1% and Irish 3.5%.

Country of birth Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Australia 285 90.2 3,192,114 73.7 15,017,847 69.8
Other top responses:  null  null  null  null  null  null
England 8 2.5 179,496 4.1 911,593 4.2
New Zealand 5 1.6 192,036 4.4 483,398 2.2
Zimbabwe 4 1.3 8,340 0.2 30,251 0.1
Canada 3 0.9 9,666 0.2 38,871 0.2
Germany 3 0.9 21,029 0.5 108,002 0.5

In Wooroolin, 90.2% of people were born in Australia. The most common countries of birth were England 2.5%, New Zealand 1.6%, Zimbabwe 1.3%, Canada 0.9% and Germany 0.9%.

Birthplace of parents, stated responses Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Both parents born overseas 17 5.7 1,057,879 26.3 6,876,586 34.3
Father only born overseas 20 6.7 282,588 7.0 1,407,270 7.0
Mother only born overseas 9 3.0 210,570 5.2 989,220 4.9
Both parents born in Australia 253 84.6 2,471,958 61.4 10,757,087 53.7

In Wooroolin, 84.6% of people had both parents born in Australia and 5.7% of people had both parents born overseas.

Religious affiliation, top responses Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Anglican 62 19.7 817,834 18.9 3,679,907 17.1
No Religion 62 19.7 955,783 22.1 4,796,787 22.3
Lutheran 32 10.2 79,181 1.8 251,931 1.2
Uniting Church 31 9.8 276,316 6.4 1,065,795 5.0
Catholic 29 9.2 1,032,928 23.8 5,439,268 25.3

The most common responses for religion in Wooroolin were Anglican 19.7%, No Religion 19.7%, Lutheran 10.2%, Uniting Church 9.8% and Catholic 9.2%.

Language, top responses (other than English) Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
German 4 1.3 16,351 0.4 80,371 0.4
 null  null  null  null  null  null  null
English only spoken at home 307 97.5 3,675,957 84.8 16,509,291 76.8
Households where two or more languages are spoken 0 0.0 183,987 11.9 1,579,949 20.4

In Wooroolin 97.5% of people only spoke English at home. The only other response for language spoken at home was German 1.3%.

Employment

Employment
People who reported being in the labour force, aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Worked full-time 99 61.9 1,302,955 60.0 6,367,554 59.7
Worked part-time 46 28.8 611,296 28.2 3,062,976 28.7
Away from work 11 6.9 125,025 5.8 627,797 5.9
Unemployed 4 2.5 131,798 6.1 600,133 5.6
Total in labour force 160 -- 2,171,074 -- 10,658,460 --

There were 160 people who reported being in the labour force in the week before Census night in Wooroolin. Of these 61.9% were employed full time, 28.8% were employed part-time and 2.5% were unemployed.

View the labour force fact sheet
Employment - hours worked
Labour force, people aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
1-15 hours per week 22 14.2 211,872 10.4 1,087,799 10.8
16-24 hours per week 10 6.5 179,614 8.8 947,792 9.4
25-34 hours per week 12 7.7 219,806 10.8 1,027,380 10.2
35-39 hours per week 24 15.5 369,264 18.1 1,808,879 18.0
40 hours or more per week 82 52.9 933,696 45.8 4,558,678 45.3

Of employed people in Wooroolin, 14.2% worked 1 to 15 hours, 6.5% worked 16 to 24 hours and 52.9% worked 40 hours or more.

Median age by employment status
Labour force, people aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Employed full-time 49 -- 40 -- 40 --
Employed part-time 49 -- 39 -- 40 --

The median age of people employed full-time in Wooroolin was 49 years and for people who were employed part-time was 49 years.

Occupation
Employed people aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Managers 46 29.3 245,606 12.0 1,293,970 12.9
Technicians and Trades Workers 20 12.7 304,563 14.9 1,425,146 14.2
Clerical and Administrative Workers 18 11.5 299,326 14.7 1,483,558 14.7
Sales Workers 16 10.2 199,634 9.8 942,140 9.4
Labourers 16 10.2 215,235 10.6 947,608 9.4
Professionals 13 8.3 385,581 18.9 2,145,442 21.3
Machinery Operators And Drivers 13 8.3 149,322 7.3 659,551 6.6
Community and Personal Service Workers 12 7.6 202,978 10.0 971,897 9.7

The most common occupations in Wooroolin included Managers 29.3%, Technicians and Trades Workers 12.7%, Clerical and Administrative Workers 11.5%, Sales Workers 10.2%, Labourers 10.2%, Professionals 8.3%, Machinery Operators And Drivers 8.3% and Community and Personal Service Workers 7.6%.

Industry of employment, top responses
Employed people aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Other Crop Growing 17 10.9 6,401 0.3 8,845 0.1
Hospitals 12 7.7 82,443 4.0 361,011 3.6
Sheep, Beef Cattle and Grain Farming 10 6.4 22,845 1.1 120,143 1.2
Road Freight Transport 8 5.1 36,704 1.8 171,578 1.7
School Education 7 4.5 101,926 5.0 467,373 4.6

Of the employed people in Wooroolin, the most common responses for industry of employment included Other Crop Growing 10.9%, Hospitals 7.7%, Sheep, Beef Cattle and Grain Farming 6.4%, Road Freight Transport 5.1% and School Education 4.5%.

Median weekly incomes
People aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Personal 462 -- 587 -- 577 --
Family 1,013 -- 1,453 -- 1,481 --
Household 883 -- 1,235 -- 1,234 --

The median weekly personal income for people aged 15 years and over in Wooroolin was $462.

View the income fact sheet
Travel to work, top responses
Employed people aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Car, as driver 85 54.1 1,248,542 61.2 6,059,972 60.2
Truck 8 5.1 25,605 1.3 104,746 1.0
Car, as passenger 4 2.5 125,269 6.1 537,638 5.3
Other 4 2.5 14,312 0.7 66,616 0.7
Walked only 4 2.5 75,560 3.7 377,043 3.7
 null  null  null  null  null  null  null
People who travelled to work by public transport 0 0.0 154,773 7.6 1,046,721 10.4
People who travelled to work by car as driver or passenger 89 56.7 1,378,983 67.6 6,620,840 65.8

In Wooroolin, on the day of the Census, the most common methods of travel to work for employed people included Car, as driver 54.1%, Truck 5.1%, Car, as passenger 2.5%, Other 2.5% and Walked only 2.5%. On the day, 0.0% of employed people used public transport (train, bus, ferry, tram/light rail) as at least one of their methods of travel to work and 56.7% used car (either as driver or as passenger).

Unpaid work
People aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Did unpaid domestic work (last week) 190 75.4 2,474,102 71.6 12,149,347 70.0
Cared for child/children (last two weeks) 70 28.0 986,298 28.5 4,827,808 27.8
Provided unpaid assistance to a person with a disability (last two weeks) 25 10.0 353,373 10.2 1,896,957 10.9
Did voluntary work through an organisation or group (last 12 months) 63 25.2 645,543 18.7 3,090,874 17.8

In Wooroolin, of people aged 15 years and over, 75.4% did unpaid domestic work in the week before the Census. During the two weeks before the Census, 28.0% provided care for children and 10.0% assisted family members or others due to a disability, long term illness or problems related to old age. In the year before the Census, 25.2% of people did voluntary work through an organisation or a group.

Unpaid domestic work, number of hours
People aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Less than 5 hours per week 45 17.9 772,078 22.3 3,883,357 22.4
5 to 14 hours per week 61 24.3 915,272 26.5 4,444,640 25.6
15 to 29 hours per week 39 15.5 425,045 12.3 2,075,154 12.0
30 hours or more per week 43 17.1 361,710 10.5 1,746,196 10.1

Of people who did unpaid domestic work in the week before the Census in Wooroolin, 24.3% worked 5 to 14 hours, 15.5% worked 15 to 29 hours and 17.1% worked 30 hours or more.

Families

family composition | weekly incomes | employment status of couple families

Family composition

Family composition Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Couple family without children 46 50.0 453,102 39.5 2,150,301 37.8
Couple family with children 29 31.5 491,200 42.8 2,534,399 44.6
One parent family 17 18.5 184,547 16.1 901,637 15.9
Other family 0 0.0 19,330 1.7 97,722 1.7

Of the families in Wooroolin, 31.5% were couple families with children, 50.0% were couple families without children and 18.5% were one parent families.

Single (or lone) parents
Proportion of the total single (or lone) parent population
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Male -- 37.5 -- 17.9 -- 17.6
Female -- 62.5 -- 82.1 -- 82.4

In Wooroolin 37.5% of single parents were male and 62.5% were female.

Weekly incomes

Median family income, couple families with two incomes Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Families without children 1,583 -- 2,011 -- 2,081 --
Families with children 1,416 -- 2,256 -- 2,310 --

In Wooroolin, for couple families with two incomes, the median income for those with children was $1,416 and those without children was $1,583.

View the income fact sheet

Employment status of couple families

Employment status of couple families
Labour force, parents or partners aged 15 years and over
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Both employed, worked full-time 23 30.7 216,006 22.9 1,015,165 21.7
Both employed, worked part-time 3 4.0 34,300 3.6 174,795 3.7
One employed full-time, one part-time 10 13.3 197,353 20.9 1,001,907 21.4
One employed full-time, other not working 15 20.0 144,966 15.4 736,322 15.7
One employed part-time, other not working 6 8.0 47,188 5.0 251,191 5.4
Both not working 10 13.3 174,355 18.5 899,598 19.2
Other 5 6.7 58,603 6.2 291,196 6.2
Labour force status not stated 3 4.0 71,530 7.6 314,529 6.7

In Wooroolin, of couple families with children, 30.7% had both partners employed full-time, 4.0% had both employed part-time and 13.3% had one employed full-time and the other part-time.

Dwellings

dwelling structure | household composition | mortgage & rent | number of motor vehicles

Dwelling structure

Dwelling tables exclude visitor only and other non-classifiable households

Dwelling type Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Occupied private dwellings 122 85.3 1,547,303 89.7 7,760,320 89.3
Unoccupied private dwellings 21 14.7 177,911 10.3 934,470 10.7

In Wooroolin, 85.3% of private dwellings were occupied and 14.7% were unoccupied.

Dwelling structure
Occupied private dwellings
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Separate house 120 96.0 1,215,302 78.5 5,864,574 75.6
Semi-detached, row or terrace house, townhouse etc 0 0.0 129,429 8.4 765,980 9.9
Flat, unit or apartment 0 0.0 181,717 11.7 1,056,237 13.6
Other dwelling 5 4.0 19,575 1.3 66,666 0.9

Of occupied private dwellings in Wooroolin, 96.0% were separate houses, 0.0% were semi-detached, row or terrace houses, townhouses etc, 0.0% were flats, units or apartments and 4.0% were other dwellings.

Number of bedrooms
Occupied private dwellings
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
None (includes bedsitters) 0 0.0 8,676 0.6 42,160 0.5
1 bedroom 0 0.0 64,983 4.2 363,129 4.7
2 bedrooms 14 11.2 260,607 16.8 1,481,577 19.1
3 bedrooms 63 50.4 651,208 42.1 3,379,930 43.6
4 or more bedrooms 44 35.2 532,756 34.4 2,350,132 30.3
Number of bedrooms not stated 4 3.2 29,075 1.9 143,394 1.8
Average number of bedrooms per dwelling 3.3 -- 3.2 -- 3.1 --
Average number of people per household 2.3 -- 2.6 -- 2.6 --

In Wooroolin, of occupied private dwellings 0.0% had 1 bedroom, 11.2% had 2 bedrooms and 50.4% had 3 bedrooms. The average number of bedrooms per occupied private dwelling was 3.3. The average household size was 2.3 people.

Tenure
Occupied private dwellings
Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Owned outright 48 38.4 448,615 29.0 2,488,149 32.1
Owned with a mortgage 41 32.8 533,870 34.5 2,709,433 34.9
Rented 32 25.6 513,413 33.2 2,297,458 29.6
Other tenure type 0 0.0 14,306 0.9 70,069 0.9
Tenure type not stated 4 3.2 37,100 2.4 195,213 2.5

Of occupied private dwellings in Wooroolin, 38.4% were owned outright, 32.8% were owned with a mortgage and 25.6% were rented.

Household composition

Household composition Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Family households 93 75.0 1,120,828 72.4 5,550,614 71.5
Single (or lone) person households 31 25.0 353,509 22.8 1,888,698 24.3
Group households 0 0.0 72,967 4.7 321,007 4.1

In Wooroolin, of all households, 75.0% were family households, 25.0% were single person households and 0.0% were group households.

Household income Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Less than $600 gross weekly income -- 32.5 -- 22.8 -- 23.7
More than $3,000 gross weekly income -- 3.4 -- 10.2 -- 11.2

In Wooroolin, 32.5% of households had a weekly household income of less than $600 and 3.4% of households had a weekly income of more than $3,000.

View the income fact sheet

Mortgage & rent

Proportions are calculated using all tenure types for occupied private dwellings. This excludes visitor only and other non-classifiable households.

Rent weekly payments Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Median rent 210 -- 300 -- 285 --
Households where rent payments are less than 30% of household income -- 94.8 -- 88.1 -- 89.6
Households where rent payments are 30%, or greater, of household income -- 5.2 -- 11.9 -- 10.4

Proportions in this table are calculated by taking the number of households whose rent payments were 30% or more of an imputed income measure and expressing this number as a proportion of the total number of households in an area, including those households which are not renting their dwelling (excluding the small proportion of visitor only and other non-classifiable households). The nature of the income imputation means that the reported proportion may significantly overstate the true proportion. Further information on the method to impute income is available in the income fact sheet.

View the income fact sheet
Mortgage monthly repayments Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Median mortgage repayments 845 -- 1,850 -- 1,800 --
Households where mortgage payments are less than 30% of household income -- 88.7 -- 90.3 -- 90.1
Households where mortgage payments are 30%, or greater, of household income -- 11.3 -- 9.7 -- 9.9

Proportions in this table are calculated by taking the number of households who own their dwelling, and whose mortgage payments were 30% or more of an imputed income measure and expressing this number as a proportion of the total number of households in an area, including those households which were renting their dwelling (excluding the small proportion of visitor only and other non-classifiable households). The nature of the income imputation means that the reported proportion may significantly overstate the true proportion. Further information on the method to impute income is available in the income fact sheet.

View the income fact sheet

Number of motor vehicles

Number of registered motor vehicles Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
None 4 3.2 110,842 7.2 665,852 8.6
1 motor vehicle 37 29.8 547,575 35.4 2,778,576 35.8
2 motor vehicles 45 36.3 575,735 37.2 2,802,468 36.1
3 or more vehicles 33 26.6 267,081 17.3 1,279,134 16.5
Number of motor vehicles not stated 5 4.0 46,071 3.0 234,292 3.0

In Wooroolin, 29.8% of occupied private dwellings had one registered motor vehicle garaged or parked at their address, 36.3% had two registered motor vehicles and 26.6% had three or more registered motor vehicles.

Aboriginal and/or Torres Strait Islander people

selected people & dwelling characteristics

People characteristics

People characteristics Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Aboriginal and/or Torres Strait Islander 9 -- 155,825 -- 548,368 --
 null  null  null  null  null  null  null
Male 6 66.7 76,744 49.3 270,331 49.3
Female 3 33.3 79,081 50.7 278,037 50.7
 null  null  null  null  null  null  null
Median age 1 -- 20 -- 21 --

In Wooroolin, there were 9 Aboriginal and/or Torres Strait Islander people. Of these, 6 (or 66.7%) were male and 3 (or 33.3%) were female. The median age was 1 years.

Dwelling characteristics

Dwelling tables exclude visitor only and other non-classifiable households. These tables represent occupied private dwellings where at least one Aboriginal and/or Torres Strait islander person was present.

Dwelling characteristics Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Average number of people per household 4 -- 3.4 -- 3.3 --
Average number of people per bedroom 2 -- 1.3 -- 1.2 --
Median household income 1,125 -- 1,066 -- 991 --

Average number of people per bedroom includes a miscalculation. For more information see the persons per bedroom correction page.

In Wooroolin, for dwellings occupied by Aboriginal and/or Torres Strait Islander people, the average household size was 4, with 2 persons per bedroom. The median household income was $1,125.

Mortgage and rent Wooroolin % Wooroolin Queensland % Queensland Australia % Australia
Median weekly rent 240 -- 220 -- 195 --
Median monthly mortgage repayments 0 -- 1,733 -- 1,647 --

In Wooroolin, for dwellings occupied by Aboriginal and/or Torres Strait Islander people, the median weekly rent was $240 and the median monthly mortgage repayment was $0.

Some values may have been adjusted to avoid release of confidential data. This may have a significant impact on the calculated percentages.