| California | 21.20 |
| New York | 10.51 |
| Massachusetts | 6.69 |
| Pennsylvania | 4.90 |
| Illinois | 4.64 |
| Indiana | 4.34 |
| Washington | 4.05 |
| Connecticut | 3.05 |
| Virginia | 2.92 |
| Texas | 2.91 |
| Michigan | 2.84 |
| Arizona | 2.54 |
| District of Columbia | 2.42 |
| Missouri | 2.30 |
| New Jersey | 2.24 |
| Oregon | 2.18 |
| Georgia | 2.18 |
| Florida | 2.14 |
| Wisconsin | 1.87 |
| Alabama | 1.64 |
| Iowa | 1.55 |
| Ohio | 1.46 |
| Colorado | 1.43 |
| New Hampshire | 1.29 |
| Utah | 1.23 |
| Maryland | 0.83 |
| North Dakota | 0.64 |
| South Carolina | 0.62 |
| Hawaii | 0.47 |
| Vermont | 0.44 |
| Minnesota | 0.42 |
| Kentucky | 0.41 |
| Alaska | 0.40 |
| Maine | 0.37 |
| Nebraska | 0.36 |
| Idaho | 0.23 |
| Rhode Island | 0.15 |
| New Mexico | 0.12 |