here are a few stats, from itrc:

• 167 data breaches occurred in the first quarter of 2008 affecting 8.3 million people.
• As of April 22, 2008, 205 data breaches have occurred this year.
• Over 200 million people have had their identities compromised in a data breach since 2005.

•  2007 Data Breach Breakdown:

24.5% government/military agencies
24.7% from educational institutions
29.3% from general businesses
14.5% from health care facilities / companies
7% from banking / credit / financial services