The Luhn Formula: 1  Drop the last digit from the number. The last digit is what we want to check against. 2  Reverse the numbers. 3  Multiply the digits in odd positions (1, 3, 5, etc.) by 2 and subtract 9 to all any result higher than 4  9. Add all the numbers together.
Australia Exports of Goods and Services is at 19.79%, compared to 20.90% last year. This is higher than the long term average of 16.23%. Categories: Components of GDP, International Transactions. Region: Australia. Report: World Development Indicators.
The overall value of the mineral and petroleum industry in Western Australia was A$71.3 billion in 2008-09, a 19 percent increase compared to the previous financial year. Western Australia's iron ore output for 2011 was 474 million tonnes, 97% of Australian production.The bulk of Western Australian ore went to China, which imported 70% percent of 2010 production, followed by Japan with 19% and South Korea with 10%. number of mines however are also located in the Mid West and Kimberley regions as well as in the Wheatbelt. The big two producers, Rio Tinto and BHP Billiton accounted for 90 percent of all iron ore production in the state in 2008-09, with the third-biggest producer being the Fortescue Metals Group.