| States | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 |
| Alabama | 7 | 5 | 6 | 3 | 6 | 5 |
| Kentucky | 1 | 0 | 1 | 7 | 3 | 6 |
| Michigan | 17 | 13 | 5 | 3 | 1 | 0 |
| Minnnesota | 6 | 20 | 8 | 1 | 2 | 0 |
| Mississippi | 0 | 3 | 0 | 0 | 0 | 0 |
| Nebraska | 0 | 3 | 1 | 1 | 0 | 1 |
| North Dakota | 0 | 0 | 0 | 1 | 0 | 0 |
| Pennsylvania | 9 | 3 | 0 | 0 | 0 | 1 |
| South Dakota | 0 | 0 | 3 | 1 | 1 | 1 |
| Virginia | 3 | 3 | 48 | 17 | 2 | 6 |
| Wisconsin | 0 | 0 | 0 | 1 | 0 | 0 |