According to the latest figures, white collar prosecutions are up.  The December 2009 figures of Trac Reports here  shows a 9.2 increase from last month and a 19.9 increase from 5 years ago including magistrate court and 1.8 increase excluding magistrate court. But again, these statistics need to be examined carefully. (see here and here), especially with regard to how the term "white collar crime" is defined.

(esp) (w/ disclosure that she is a B.S. graduate of Syracuse U.- home of the Trac Reports).