Here is a number that is much higher than I imagined. I wonder what the world number is.
From this weeks OEM partner newsletter
Drive New Revenue with Windows 2000 Server End of Support Migration
With approximately 500,000 users still using Windows Server 2000 in the United States, there is a significant market opportunity for you to encourage your customers to migrate to Windows Server 2008 R2. Resources are available to aid both the sales and migration processes for your customers.
I guess MCSE 2k will die in July also, that just leaves MCSE 2k3 as the last valid one.