Region
California
1,067
Alaska
567
United States
536
Nevada
509
Colorado
397
Arizona
293
Washington (State)
289
Florida
275
Oregon
249
Afghanistan
223
New Mexico
203
Utah
194
Hawaii
184
Idaho
174
Montana
170
Wyoming
118
Texas
110
New York (State)
109
Virginia
107
North Carolina
103
Massachusetts
100
Pennsylvania
99
South Carolina
89
Georgia
88
West (U.S.)
86
Missouri
83
Kansas
82
Wisconsin
80
Louisiana
77
Minnesota
77
Arkansas
74
Indiana
70
New Hampshire
67
Maryland
66
Saudi Arabia
64
Illinois
62
California, Southern
60
Ohio
60
Puerto Rico
60
Nye County
59
Powder River Basin (Wyo. and Mont.)
58
Tennessee
58
San Bernardino County
57
New Jersey
56
Oklahoma
56
Mexico, Gulf of
55
South Dakota
54
West Virginia
53
San Francisco Bay
52
Northwest, Pacific
51
more ...