Increasing at a pretty quick rate:
QUOTE
Another interesting aspect of this data is that these numbers do not include visitors using Windows on Mac hardware via Boot Camp or other program. Therefore, these numbers actually understate the market share for the Mac. We have no way of telling by how much, however.
Nor do they include Mac users who set their browsers to be recognized as IE.
http://www.computerworld.com/action/articl...;taxonomyId=123
http://marketshare.hitslink.com/report.asp...85&qpnp=24#
http://marketshare.hitslink.com/report.asp...13&sample=2
http://marketshare.hitslink.com/articles.aspx
And remember all the talk about where all the iPhones went? Well here is proof positive that they are everywhere. 
http://marketshare.hitslink.com/report.aspx?qprid=21