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QUALITY DECLARATION – OVERSEAS ARRIVALS AND DEPARTURES, AUSTRALIA
OAD data provides information on all recorded movements across Australia's borders, both in-bound and out-bound, by category of movement and numerous other variables (listed towards the end of the Explanatory Notes under Additional Statistics Available). The three main categories of movement are:
Geographically, OAD data are available at the Australia and state and territory levels. For all arrivals, state and territory data are based on the state or territory of intended address. Compilation of OAD statistics use the Standard Australian Classification of Countries (SACC), 2011 (cat. no. 1269.0).
Care should be taken when interpreting OAD movement data as 'people' as these statistics relate to the number of movements of travellers rather than the number of travellers (i.e. multiple movements of individual persons during a given reference period are each counted separately). The statistics exclude the movements of operational air and ships' crew, transit passengers who pass through Australia but are not cleared for entry, passengers on pleasure cruises commencing and finishing in Australia, and unauthorised arrivals. Users requiring data on the number of travellers (people) who stay within (or away from) Australia for at least 12 months may find NOM estimates more suitable to meet their needs. For more information on NOM see the Explanatory Notes in Migration, Australia (cat. no. 3412.0).
International tourism contributes to estimates of the direct economic contribution of tourism to the Australian economy. The estimates are included in the tourism satellite account linked to the Australian system of national accounts and to Australia's international trade in goods and services on a balance of payments basis.
OAD statistics are released monthly, approximately 6 weeks after the end of the reference period.
OAD statistics are derived from a combination of full enumeration and sampling. From July 2007, all departures are fully enumerated. All permanent arrivals and all arrivals with a duration of one year or more (long-term arrivals) are also fully enumerated. However, all arrivals with a duration of less than one year (short-term arrivals) are sampled. The sample is a fixed skip based on a threshold selected by country of citizenship. The sample is designed so that countries of citizenship associated with a small number of movements are fully sampled, while countries with a larger number of movements tend to have a higher threshold. This approach minimises the effect of sampling error associated with the available statistics. From July 2007, about 5% of all short-term arrivals have been selected for sample. Statistics relating to these movements are therefore weighted estimates.
Two types of errors are possible in an estimate based on a sample; non-sampling and sampling:
OAD data measure crossings of Australia's borders. The data are available from 1901, for various categories of traveller (e.g. permanent, long-term and short-term arrivals and departures) and periods (e.g. annual, quarterly and monthly). Electronic data are available from this website for categories of traveller on a monthly basis from January 1976, with selected variables available from January 1991.
To provide a high degree of consistency and comparability over time, this administrative data has required careful and continuing maintenance and development to protect the integrity of the data and the efficiency of the collection. Changes that have occurred over the collection period include: sampling methods, estimation methods, concepts, data item definitions, classifications and time series analysis techniques. For example the change in boundaries and existence of various countries can affect their comparability over time.
All published OAD data are available as original series estimates. Trend series estimates and seasonally adjusted series estimates, for short-term visitor arrivals are available from January 1991. Trend series estimates and seasonally adjusted series estimates, for short-term resident returns, are available from July 2007. Additionally, for these two categories, trend and seasonally adjusted estimates are available by country of previous residence and main country of destination from July 2007.
Seasonally adjusted estimates allow users to analyse short-term movements including irregular impacts on the series while trend estimates provide a better method to analyse and monitor the underlying direction of the short-term movement series. In most cases the trend series is the best source of information on the long-term direction of these statistics.
Further information can be obtained from the Explanatory Notes and Appendices in this release.
OAD data are available in a variety of formats on the ABS website.
The Overseas Arrivals and Departures, Australia (cat. no. 3401.0) release provides the most comprehensive source for statistics on OAD in Australia, particularly for short-term movements. Over the years OAD data have been released via various outputs including .pdf, spreadsheets and data files. Currently, this publication is released as a monthly web-only release (e.g. Key Figures, Main Features, Explanatory Notes, etc.) with an associated 11 time series spreadsheets (Excel format) available from the Downloads tab.
Graphs on the monthly change to short-term visitor arrivals and short-term resident departures (Trend) are available in Key Economic Indicators (cat. no. 1345.0).
More detailed or customised tabulation of OAD data is available through ABS Consultancy Services. A list of variables for OAD data is available towards the end of the Explanatory Notes under Additional Statistics Available. For inquiries contact the National Information and Referral Service on 1300 135 070 or email firstname.lastname@example.org
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