Season 1- 10 Season 2- 9 Season 3- 10 Season 4- 6 Season 5- 8 Season 6- 7

Season 4 and 6 were too stupid and painful to watch. They even swerved the storyline and the characters were made more unlikeable. Well, in the end the characters that people loved the most will be Troy and Abed only. No character had their arc towards goodness and that was clearly shown in Garett's wedding episode, S06E12.