Percentage wise you're right about those being the worst years he had, but I know he had a bad year in 05 with some critical misses that cost us several games. Some of the kicks, that should have been automatic, were so bad that people were thinking he threw the games just so we could get the 1st pick in the Draft and pick Reggie! Looking back on it now it sure seems funny.
I just hope we can find a better Kicker with range and accuracy. Looking at those stats, Brown has only had a couple of really good years with us (07 and 08). Other than that, he looks to be mediocre at best. It's probably time to move on!