United States 30,000
Great Britain 2,518
Germany 1,726
China 1,516
Japan 1,279
Israel 996
India 900
California 872
New York (State) 869
France 760
England 755
North Carolina 745
Europe 738
Canada 699
Soviet Union 489
États-Unis 458
Massachusetts 421
Russia (Federation) 412
Indonesia 405
Prussia 373
Italy 358
Pennsylvania 354
New York 330
États-Unis 321
Developing countries 318
Africa 311
Australia 294
Philippines 275
Korea (South) 271
Allemagne 264
Nigeria 259
Spain 244
Mexico 243
South Africa 239
Illinois 228
Thailand 220
Foreign countries 207
Asia 205
North America 195
Prusse 191
Ireland 185
Russia 185
Vietnam 173
Latin America 162
Grande-Bretagne 157
European Union countries 156
Connecticut 150
New Jersey 149
Brazil 148
Austria 147
Philadelphia 147
Ohio 146
Germany (West) 140
London 139
Greece 126
Malaysia 124
Turkey 120
New Zealand 117
Switzerland 114
Scotland 113
Bolivia 111
Colombia 109
Korea 109
New Hampshire 109
Netherlands 107
USA 107
Poland 106
Southern States 100
Taiwan 99
Virginia 99
Pakistan 98
Michigan 96
Middle East 95
Texas 95
Japon 93
Kenya 92
Rome 87
Peru 86
Ukraine 86
New York (N.Y.) 84
Egypt 83
Wisconsin 83
Sweden 82
Uganda 82
European Economic Community countries 81
Singapore 79
Oregon 77
Alaska 76
Tropics 76
Argentina 75
Ecuador 75
Ghana 74
Colorado 71
South Carolina 71
Washington (D.C.) 71
Caribbean Area 70
Cambridge 69
Europe, Eastern 69
London (England) 69
Morocco 68