According to the 2008 Annual report
management has been buying back shares for years.
2006 1,653,795 shares for $72MM-average cost $43.34 per share
2007 671,728 shares for $33MM-average cost $48.62 per share
2008 1,476,449 shares for $59MM-average cost $40.33 per share

It doesn't appear that too many shares were bought down in the $20's and teens this year.

b&w