Region
United States
292
Canada
108
Australia
67
South Africa
56
China
53
India
52
California
50
Colorado
38
Indonesia
33
Pennsylvania
32
New Mexico
29
Illinois
26
Alaska
24
Ontario
24
Soviet Union
23
Zimbabwe
22
Arizona
19
Great Britain
19
Japan
19
Brazil
18
British Columbia
17
Colombia
17
Philippines
17
Peru
16
Manitoba
14
Mexico
14
France
13
Russia (Federation)
13
Austria
12
Oregon
12
Argentina
11
Michigan
11
Montana
11
New York (State)
11
Oklahoma
11
West (U.S.)
11
Zambia
11
Nova Scotia
10
Saskatchewan
10
Transvaal
10
Western Australia
10
Wyoming
10
Alberta
9
Ohio
9
Tennessee
9
Texas
9
Victoria
9
Asia
8
Australasia
8
Georgia
8
more ...