Region
United States
572
Southern States
64
California
45
Hawaii
43
West (U.S.)
23
Alaska
20
Middle West
20
Idaho
19
Great Plains
17
Oregon
17
Texas
17
Northwestern States
16
Europe
15
Utah
15
Florida
14
Louisiana
14
Northeastern States
14
Washington (State)
14
Colorado
13
Kansas
13
États-Unis
13
Arizona
12
Gulf States
11
Canada
10
Arkansas
9
Tropics
9
Australia
8
Developing countries
8
Mississippi
8
Montana
8
New England
8
Rocky Mountains Region
8
South Atlantic States
8
Southwestern States
8
Wyoming
8
Alabama
7
États-Unis
7
Japan
7
Massachusetts
7
Mexico
7
Nebraska
7
New York (State)
7
North America
7
North Dakota
7
South Carolina
7
Brazil
6
Central America
6
France
6
Great Britain
6
Lake States
6
more ...