| California | 20.97 |
| New York | 9.51 |
| Massachusetts | 6.09 |
| Washington | 5.06 |
| Illinois | 4.91 |
| Oregon | 3.87 |
| Pennsylvania | 3.80 |
| Indiana | 3.56 |
| Wisconsin | 3.04 |
| Virginia | 3.03 |
| Texas | 2.99 |
| Michigan | 2.65 |
| Arizona | 2.61 |
| Connecticut | 2.55 |
| Georgia | 2.54 |
| New Jersey | 2.32 |
| New Hampshire | 2.24 |
| Missouri | 2.23 |
| Ohio | 1.86 |
| Maryland | 1.79 |
| Florida | 1.69 |
| Alabama | 1.66 |
| Iowa | 1.59 |
| Utah | 1.24 |
| Colorado | 1.18 |
| District of Columbia | 0.90 |
| Oklahoma | 0.79 |
| North Dakota | 0.66 |
| South Carolina | 0.63 |
| Hawaii | 0.48 |
| Kentucky | 0.38 |
| Maine | 0.37 |
| Nebraska | 0.36 |
| Minnesota | 0.29 |
| New Mexico | 0.12 |