United States - 1801
Russia - 404
France - 290
China - 204
Germany - 184
Canada - 76
Netherlands - 70
Latvia - 51
Great Britain - 49
Czech Republic - 39
Bulgaria - 34
Luxembourg - 28
Singapore - 27
Ukraine - 26
Sweden - 23
Japan - 23
Ireland - 23
India - 21
Italy - 21
Spain - 18
Vietnam - 17
Romania - 16
Iran - 15
Australia - 12
Poland - 11
Belgium - 9
Finland - 8
Indonesia - 8
Hong Kong - 8
Europe - 7
Israel - 7
Brazil - 7
Jordan - 7
Norway - 7
Lithuania - 6
South Korea - 6
Greece - 5
Switzerland - 5
Austria - 5
Thailand - 5
Moldova - 5
Malaysia - 4
South Africa - 4
Turkey - 3
Chile - 3
Belarus - 3
Serbia - 2
Bangladesh - 2
Taiwan - 2
Lebanon - 2
Nepal - 2
Estonia - 2
Argentina - 2
Kazakhstan - 2
Azerbaijan - 2
Kuwait - 2
Hungary - 2
Bahrain - 1
Colombia - 1
Honduras - 1
Pakistan - 1
Swaziland - 1
Nigeria - 1
Peru - 1
Slovakia - 1
Uzbekistan - 1
Iceland - 1
Tonga - 1
Portugal - 1
Cambodia - 1
Ethiopia - 1
Mexico - 1