NOSSCR has published the state-by-state statistics for Social Security allowance rates in 2008. Charles Hall has republished the state-by-state numbers on his blog, Social Security News.
In Maine, 35.7% of Social Security disability claims were allowed at the initial determination. At the Reconsideration level, 15.5% of the claims appealed after the initial denial were allowed.
These allowance rates are surprisingly close to last year's numbers.