0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
22%
24%
26%
28%
30%
32%
34%
36%
38%
40%
Pennsylvania
2%
34%
Illinois
12%
34%
Connecticut
9%
26%
New Hampshire
4%
21%
Louisiana
17%
31%
Oklahoma
13%
27%
Michigan
6%
18%
Kentucky
9%
21%
New Jersey
0%
11%
South Carolina
11%
21%
Kansas
8%
18%
Virginia
6%
15%
California
7%
16%
Rhode Island
10%
19%
Alabama
9%
17%
West Virginia
16%
24%
National
8%
15%
Mississippi
9%
16%
North Carolina
3%
10%
Arizona
1%
8%
Nebraska
11%
18%
Hawaii
0%
6%
District of Columbia
1%
6%
Alaska
6%
11%
Massachusetts
12%
17%
Arkansas
9%
14%
Ohio
11%
16%
Montana
10%
14%
New York
1%
5%
Missouri
8%
13%
Maryland
12%
16%
New Mexico
9%
13%
Texas
10%
13%
Utah
16%
20%
Georgia
13%
17%
Iowa
8%
11%
Nevada
33%
36%
Washington
1%
4%
Vermont
3%
5%
Wyoming
6%
8%
Tennessee
5%
7%
Delaware
1%
2%
Wisconsin
3%
5%
Colorado
9%
11%
South Dakota
5%
6%
Florida
10%
11%
Oregon
11%
12%
Minnesota
4%
4%
Idaho
9%
9%
North Dakota
8%
8%
Indiana
19%
18%
Maine
14%
13%
2001|
2018|