2024
| Arkansas | Nebraska | South Dakota |
| Kansas | New Mexico | Tennessee |
| Kentucky | Oklahoma | West Virginia |
2023
| Georgia | Kansas | New Mexico | South Dakota |
| Idaho | Kentucky | North Dakota | Vermont |
| Illinois | Missouri | Oklahoma | |
| Iowa | Nebraska | Tennessee |
2022
| Arkansas | Kansas | Nebraska | South Dakota |
| District of Columbia | Kentucky | New Mexico | Tennessee |
| Idaho | Louisiana | North Dakota | Utah |
| Illinois | Mississippi | Oklahoma | |
| Iowa | Missouri | South Carolina |
2021
| Arkansas | Iowa | Nebraska | South Carolina |
| District of Columbia | Kansas | Nevada | South Dakota |
| Georgia | Kentucky | New Mexico | Tennessee |
| Idaho | Mississippi | North Dakota | Utah |
| Illinois | Missouri | Oklahoma | Vermont |
2020
| Arkansas | Nebraska |
| Idaho | Nevada |
| Illinois | North Dakota |
| Iowa | Oklahoma |
| Kansas | South Carolina |
| Kentucky | South Dakota |
| Mississippi | Utah |
| Missouri | Vermont |
2019
| Arkansas | New Mexico |
| Georgia | North Dakota |
| Idaho | Oklahoma |
| Illinois | South Carolina |
| Iowa | South Dakota |
| Kansas | Tennessee |
| Kentucky | Utah |
| Mississippi | Vermont |
| Missouri | Wyoming |
| Nebraska | |
2018
| Illinois | Oklahoma |
| Iowa | South Carolina |
| Kansas | South Dakota |
| Kentucky | Tennessee |
| Louisiana | Texas |
| Mississippi | Utah |
| Missouri | West Virginia |
| Nebraska | Wyoming |
| New Mexico |
2017
| Arkansas | New Mexico |
| Idaho | North Dakota |
| Illinois | Oklahoma |
| Kentucky | South Dakota |
| Louisiana | Tennessee |
| Missouri | Utah |
| Nebraska | Vermont |
| Nevada | West Virginia |
2016
| Alabama | Iowa | Montana | Utah |
| Alaska | Louisiana | Nebraska | Vermont |
| Arkansas | Mississippi | North Dakota | Virgin Islands |
| Idaho | Missouri | South Dakota | West Virginia |
2015
| Alaska | Kansas | Nebraska | Utah |
| Arkansas | Louisiana | New Mexico | Vermont |
| Guam | Mississippi | North Dakota | U.S. Virgin Islands |
| Idaho | Missouri | Oklahoma | West Virginia |
| Iowa | Montana | South Dakota | Wyoming |
2014
| Alabama | Iowa | Missouri | Utah |
| Alaska | Kansas | Nebraska | Vermont |
| Arkansas | Louisiana | North Dakota | West Virginia |
| Idaho | Mississippi | South Dakota | Wyoming |
2013
| Alaska | Iowa | South Dakota | Vermont |
| Arkansas | Mississippi | Utah | West Virginia |
| Idaho | North Dakota | U.S. Virgin Islands |
2012
| Alaska | Kansas | Nebraska | Utah |
| Arkansas | Mississippi | North Dakota | Vermont |
| Idaho | Missouri | South Dakota | |
| Iowa | Montana | Texas |
2011
| South Dakota | Utah |
2010
| North Dakota | South Dakota |