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| Nation | Gold |
|---|
| United States | 8 |
|---|
| Japan | 4 |
|---|
| Year | Final Host | Champions | Final score | Runners-up |
| 2005 | Oklahoma City, Oklahoma | Japan | 3 – 1 | United States |
| 2006 | Oklahoma City, Oklahoma | United States | 5 – 2 | Japan |
| 2007 | Oklahoma City, Oklahoma | United States | 3 – 0 | Japan |
| 2009 | Oklahoma City, Oklahoma | United States | 3 – 1 | Australia |
| 2010 | Oklahoma City, Oklahoma | United States | 5 – 1 | Japan |
| 2011 | Oklahoma City, Oklahoma | United States | 6 – 4 | Japan |
| 2012 | Oklahoma City, Oklahoma | United States | 3 – 0 | Australia |
| 2013 | Oklahoma City, Oklahoma | Japan | 6 – 3 | United States |
| 2014 | Irvine, California | United States | 5 – 2 | Canada |
| 2015 | Irvine, California | United States | 6 – 1 | Japan |
| 2016 | Oklahoma City, Oklahoma | Japan | 2 – 1 | United States |
| 2017 | Oklahoma City, Oklahoma | Japan | 2 – 1 | United States |