The Social Security Administration now has a website that covers ALJ dispositions beginning in fiscal year 2010. The current chart covers ALJ disposition from October 1, 2009, to January 31, 2010. The last three columns are the most important; denials, fully favorable and partially favorable decisions.
You can access the website at: http://www.ssa.gov/appeals/DataSets/03_ALJ_Disp.html