http://www.nationmaster.com/red/country/ja-japan/cri-crime&all=1
http://www.nationmaster.com/red/country/us-united-states/cri-crime&all=1
From 1998 - 2000:
Rapes in Japan: 2,260
Rapes in USA: 89,110
Even when you factor in population differences, the United States' rates are still over four times greater than Japan's.