There aren't reallly qualifying numbers for adults. Anyone can compete to a certain extent. But as an example, here are the 2009
meet results for the Arnold Classic.
Also, if you look into this further, I would concentrate your efforts only on federations that use only singly ply gear, and no monolifts. For example, I do not take any numbers from the WPO with any sincerity. Christ, put me in a double ply canvas suit and a monolift, and I bet I could get close to 900-1000 lb squat.
HTH,
B-