"89 players from Michigan left the U.S. to play primarily in the OHL. Of these players, five have made it to the NHL for at least 41 games.... During the same period, 21 Michigan players who played NCAA hockey made it to the NHL for at least 41 games."
Okay, but unless we know how many players from Michigan played NCAA hockey, we can't make a comparison.
5/89 = 5.6%
21/? = ?
Repeat for the other nine states listed.