Union Level stuck from a long time

I am the Leader of the Creative Designs Union ...
My union was formed at : Monday, July 24, 2006 and its still stuck on Level 1 (21 %) ....
Take even this union for an example ...It was formed on October 6, 2006  and is on Level 2 (73 %)

I wanna know whats wrong with MY union level ...other unions formed even later than my union are even on the higher levels ...I wanna know why ?