Region
United States
United States --
50
China
11
China --
10
Asia
5
Asia --
5
Japan --
5
Japan
4
Europe --
3
Latin America
3
Latin America --
3
Europe
2
Mexico
2
Mexico --
2
Australia
1
Australia --
1
Central America
1
Central America --
1
East Asia --
1
European Economic Community countries
1
European Economic Community countries --
1
Germany
1
Germany (West)
1
Germany (West) --
1
Germany --
1
Mwxico --
1
Pacific Area --
1
Philippines
1
Philippines --
1
Taiwan
1
Taiwan --
1
United Kingdom
1
United Nations --
1