Looking closer at the emigration statistics it looks like most Dutch stay relatively close to home with Australia on the 8th position:
According to these statistics over 2000 people emigrated to Australia. In contrast, the statistics of Australian immigration show a number of only 548 Dutch immigrating to Australia (on a total of 140.148 !) during the 2006/2007 financial year, of which 364 entered using a Skilled visa (the same as I have).
Perhaps the difference in numbers is due to the fact that Dutch people leaving The Netherlands longer than 8 months are regarded upon as emigrants, while in fact they may just be traveling for a couple of months. If this is all true, this means that there are about 1500 backpackers in Australia?