It is interesting to note that, even though the state encompasses only 10 per cent of the Australian population, it contributes around 25% of the country's wealth.
What do you mean? Do you mean 25% of Australia's wealth resides in WA (I don't think so)? Do you mean that WA contributes 25% of Australia's export income (which sounds quite plausible)? If so, correct the sentence and put it back in the main article. --Robert Merkel