Region
United States
201
China
25
California
15
Mexico
15
Colombia
13
Canada
11
Developing countries
10
Australia
8
Alaska
7
Brazil
7
Japan
7
OECD countries
7
India
6
New York (State)
6
Arctic regions
5
Europe
5
Latin America
5
North America
5
Southern States
5
Antarctica
4
Appalachian Region
4
Arctic Regions
4
Asia, Central
4
European Union countries
4
États-Unis
4
Germany
4
Great Lakes (North America)
4
Great Lakes Region (North America)
4
Hong Kong
4
Israel
4
Northwest, Pacific
4
Russia (Federation)
4
Southeast Asia
4
Spain
4
Texas
4
Wisconsin
4
Asia
3
Baltic Sea
3
East Liverpool
3
Hudson River Valley (N.Y. and N.J.)
3
Latvia
3
Louisiana
3
Mexican-American Border Region
3
Minnesota
3
Netherlands
3
New Jersey
3
New Zealand
3
Ohio
3
Pacific Area
3
Philippines
3
more ...