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AUSTRALIA-BORN AND OVERSEAS-BORN
The overseas-born population from Asia, America and Africa had proportionally larger young (0-14 years) and working age (15-64 years) populations compared to those from Europe. Among all the regions, Sub-Saharan Africa had the highest proportion aged 0-14 years (12%), followed by Oceania and Antarctica (excl. Aust.), and the Americas (9% each). The overseas-born population of Southern and Eastern Europe had the highest proportion (42%) of the resident population who were aged 65 years and over, followed by North-West Europe (28%) and North Africa and the Middle East (12%). European migration peaked in the years post World War II, with many of these migrants now being retired. The Asian and Sub-Saharan Africa groups are part of more recent migration streams, highly represented by younger working age people, their children and international students.
Of the top 50 countries of birth at 30 June 2010, Nepal-born, Taiwan-born and Bangladesh-born residents had the highest proportions (96%, 92% and 92% respectively) of all overseas-born residents aged 15-64 years. Following closely behind were those persons born in Hong Kong and Vietnam (90% each). The top five countries of birth with the highest proportion of their populations aged 65 years and older were Italy (56%), Greece (55%), Hungary (51%), the Netherlands (43%), and Malta (42%). Among the overseas-born residents, Sudan-born had the highest proportion (19%) of residents aged 0-14 years, followed by the United States of America (16%), Singapore, Afghanistan, South Africa and Pakistan (12% each), and Zimbabwe and Thailand (11% each).
Figure 4.6 shows a comparison between the age and sex structures associated with the Australia-born population and the Southern and Eastern Europe-born population. As demonstrated, the Southern and Eastern Europe-born population was considerably older than the Australia-born population, with the largest proportion of the population being in the 60-64 years age group with 6.2% for males and 6.1% for females. In comparison, the most populous age group for the Australia-born population was the 0-4 years age group with 4.4% for males and 4.2% for females. The inverted pyramid shape of the Southern and Eastern Europe-born age structure is due to a large number of Southern and Eastern Europeans migrating to Australia in the period post World War II (over 60 years ago) and declining numbers of migrants arriving from that region in subsequent years.
4.6 POPULATION STRUCTURES, Australia-born and Southern and Eastern Europe-born(a) - Age and sex - 30 June 2010(b)
Median age of persons born overseas
The median age of all Australian residents born overseas at 30 June 2010 was 44.7 years, compared to 33.4 years for those born in Australia (see table 4.7). Migrants who were part of the major post-second World War migration streams of the late 1940s and 1950s are now in the older age groups. Of the top 50 countries of birth at 30 June 2010, Italy had the oldest median age at 67.5 years, followed by Greece (66.4) and Hungary (65.5). The youngest median ages were for persons born in Nepal (25.9 years), Sudan (26.7), the Republic of South Korea (29.0) and Afghanistan (29.1), the more recent migrant groups.
A comparison of the median age for each of the top 50 countries of birth by sex at 30 June 2010 (see table 4.7), reveals that women had a much older median age than men for the Philippines (42.1 and 35.4 years respectively), Thailand (32.2 and 27.1 years respectively) and Hong Kong (38.1 and 34.2 years respectively).
At 30 June 2010, the sex ratio (males per 100 females) of the overseas-born population was the same as the Australia-born population (99 males per 100 females), see table 4.7. The sex ratio varied for different countries of birth, with Nepal (171 males per 100 females), Pakistan (156), Bangladesh (147), and India (141) having the highest sex ratios of males to females. The lowest sex ratios were recorded for persons born in Thailand (53 males per 100 females), Japan (56) and the Philippines (59).