| California | 21.37 |
| New York | 9.74 |
| Washington | 5.69 |
| Illinois | 5.06 |
| Oregon | 4.55 |
| Texas | 4.42 |
| Massachusetts | 3.87 |
| Indiana | 3.63 |
| Virginia | 3.17 |
| Wisconsin | 3.10 |
| Pennsylvania | 3.06 |
| Michigan | 2.69 |
| Georgia | 2.55 |
| Arizona | 2.35 |
| New Hampshire | 2.31 |
| Maryland | 2.20 |
| Missouri | 2.18 |
| Ohio | 1.92 |
| New Jersey | 1.84 |
| Florida | 1.75 |
| Alabama | 1.74 |
| Iowa | 1.64 |
| Utah | 1.28 |
| Colorado | 1.16 |
| District of Columbia | 0.93 |
| Connecticut | 0.89 |
| Oklahoma | 0.77 |
| West Virginia | 0.75 |
| North Dakota | 0.69 |
| South Carolina | 0.65 |
| Hawaii | 0.50 |
| Kentucky | 0.39 |
| Nebraska | 0.38 |
| Maine | 0.37 |
| Minnesota | 0.30 |
| New Mexico | 0.13 |