It's an amazing figure, but true, according to an IDC paper released yesterday.
The whitepaper, entitled "The Economic Impact of IT, Software and the Microsoft Ecosystem on the Global Environment", is a VERY interesting read. Of course, with the paper being sponsored by Microsoft (and we being who we be) there's a section about how our company contribute to the global industry and world economies. But don't let that detract from the fact that this is a well-researched paper written by a neutral third party, and gives a good snapshot of where the global IT industry is at the moment, and where it seems to be heading.
Click here to read the article (I did have a massive analysis of the paper and stats included therein here, but couldn't decide where to stop typng :) so decided to delete it and leave it to you all to consider.)