אזור
Wisconsin
16
United States
7
Russia (Federation)
4
Volga River Region
3
Indonesia
2
Texas
2
Andhra Pradesh
1
Andhra Pradesh (India)
1
Canada
1
Colorado
1
England
1
France
1
Illinois
1
India
1
Indian Ocean
1
Indiana
1
Iowa
1
Kalimantan Selatan (Indonesia)
1
London
1
Ohio
1
Southern States
1
Volga River Valley
1
Washington (State)
1
West Virginia
1
Zimbabwe
1