| STATE | BEFORE 2001 | 2001-2005 | 2006-2010 | |||
|---|---|---|---|---|---|---|
| Berm | 1,000 sqft | $/sqft | 1,000 sqft | $/sqft | 1,000 sqft | $/sqft |
| Alaska | 7 | 5 | 0 | 0 | 0 | 0 |
| Arkansas | 34 | 2 | 0 | 0 | 0 | 0 |
| California | 76 | 8 | 0 | 0 | 0 | 0 |
| Colorado | 225 | 5 | 17 | 11 | 13 | 22 |
| Connecticut | 111 | 9 | 0 | 0 | 0 | 0 |
| Delaware | 50 | 0 | 0 | 0 | 0 | 0 |
| Eastern Dir. Fed. | 44 | 10 | 0 | 0 | 0 | 0 |
| Florida | 11 | 10 | 0 | 0 | 0 | 0 |
| Hawaii | 36 | 39 | 0 | 0 | 0 | 0 |
| Idaho | 130 | 3 | 0 | 0 | 0 | 0 |
| Illinois | 157 | 14 | 0 | 0 | 0 | 0 |
| Iowa | 106 | 5 | 0 | 0 | 0 | 0 |
| Maine | 7 | 5 | 0 | 0 | 0 | 0 |
| Maryland | 48 | 0 | 0 | 0 | 0 | 0 |
| Massachusetts | 9 | 35 | 0 | 0 | 0 | 0 |
| Michigan | 87 | 8 | 0 | 0 | 0 | 0 |
| Minnesota | 14 | 27 | 0 | 0 | 0 | 0 |
| Nebraska | 36 | 3 | 0 | 0 | 0 | 0 |
| Nevada | 57 | 7 | 0 | 0 | 0 | 0 |
| New Hampshire | 64 | 2 | 0 | 0 | 34 | 18 |
| New Jersey | 21 | 20 | 0 | 0 | 0 | 0 |
| New Mexico | 144 | 4 | 8 | 14 | 20 | 11 |
| New York | 335 | 7 | 0 | 0 | 0 | 0 |
| North Carolina | 248 | 3 | 0 | 0 | 0 | 0 |
| Oklahoma | 135 | 0 | 0 | 0 | 0 | 0 |
| Oregon | 553 | 7 | 0 | 0 | 0 | 0 |
| Pennsylvania | 127 | 4 | 59 | 4 | 0 | 0 |
| Texas | 73 | 23 | 0 | 0 | 0 | 0 |
| Utah | 9 | 5 | 0 | 0 | 0 | 0 |
| Virginia | 35 | 0 | 0 | 0 | 0 | 0 |
| Washington | 726 | 5 | 1 | 1,005 | 0 | 0 |
| West Virginia | 6 | 2 | 0 | 0 | 0 | 0 |
| Wisconsin | 10 | 44 | 0 | 0 | 0 | 0 |
| ALL | 3,732 | 7 | 85 | 16 | 67 | 17 |
