Imma Youtube Partner!!!

I dont understand youtube I get all my subs from doing Madden but my highest viewed video in the past month? Let's Play Mario Party 8 Story Mode Part 1, a video that's 9 months old. I mean I know people aren't searching for Madden since the game is 11 months old but for fucks sake Mario Party 8 came out in 2008 and I didn't even finish the LP on my channel!