| Alabama |
18.6 |
| Alaska |
26.6 |
| Arizona |
21.7 |
| Arkansas |
14.9 |
| California |
27.8 |
| Colorado |
17.9 |
| Connecticut |
29.7 |
| Delaware |
19.4 |
| District of Columbia |
24.9 |
| Florida |
19.4 |
| Georgia |
17.5 |
| Hawaii |
26.6 |
| Idaho |
20.2 |
| Illinois |
26.5 |
| Indiana |
17.1 |
| Iowa |
19.3 |
| Kansas |
19.3 |
| Kentucky |
18.6 |
| Louisiana |
17.3 |
| Maine |
29.7 |
| Maryland |
19.1 |
| Massachusetts |
29.7 |
| Michigan |
22.1 |
| Minnesota |
27.0 |
| Mississippi |
12.8 |
|
| Missouri |
11.5 |
| Montana |
20.2 |
| Nebraska |
19.3 |
| Nevada |
20.2 |
| New Hampshire |
29.7 |
| New Jersey |
22.5 |
| New Mexico |
18.3 |
| New York |
25.4 |
| North Carolina |
18.5 |
| North Dakota |
19.3 |
| Ohio |
20.3 |
| Oklahoma |
12.2 |
| Oregon |
26.6 |
| Pennsylvania |
18.8 |
| Rhode Island |
29.7 |
| South Carolina |
21.4 |
| South Dakota |
19.3 |
| Tennessee |
21.6 |
| Texas |
15.5 |
| Utah |
22.8 |
| Vermont |
29.7 |
| Virginia |
19.6 |
| Washington |
20.5 |
| West Virginia |
19.4 |
| Wisconsin |
23.5 |
| Wyoming |
20.2 |
|