Is it me or have American boxers lost more than they've won in recent times? To name a few examples:

Danny Jacobs lost to Dimitry Pirog
Steve Cunningham lost to Tomaz Adamek
Paul Williams lost to Sergio Martinez
Kelly Pavlik lost to Sergio Martinez
Jermain Taylor lost to Arthur Abraham and Carl Froch
James Kirkland lost to Nobuhiro Ishida
Shane Mosley lost to Manny Pacquiao
Eddie Chambers lost to Wladimir Klitschko
Cris Arreola lost to Vitali Klitschko
Chad Dawson to Jean Pascal
Roy Jones lost to everyone.

There are only two Americans on the top ten p4p lis. There's only one American heavyweight in the top ten. There's only one American cruiserweight in the top ten. There's only three American light heavyweights in the top ten. There's only one American super middleweight in the top ten. There is NO American middleweight in the top ten. Junior middleweight is the only division dominated by Americans. There's only two Americans in the top ten at welterweight. And it goes on.

I understand that there are probably a dozen counter examples to the ones above, but still, boxing is a sport, where, correct me if I'm wrong, but Americans have traditionally done very well. It seems that now most of the top competition is coming from outside of the US. Am I wrong? If not, what do you think is the reason behind this recent demise in American boxing. Lack of gyms? Lack of good coaches? Rest of the world has caught up?