around 2% here... but by far some of the best paying ones (corporates).
Why the heck would a company stick to IE7? It's not like the compatibility modes of later IE's don't work or something...
when you have to support multiple thousands employees, having a stable environment is key. upgrading becomes an expensive and slow process.
the next load set at that company is currently in testing for the last 9 months (!) and will upgrade to ie9 and office 2010 - both will be around for a few years to come, their extended support periods end in 2020.