United States 11 Estonia 1 France 103 Latvia 7 Czech Republic 46 Russia 144 Poland 7 Spain 8 Canada 1 Slovenia 2 Austria 8 South Africa 3 United Kingdom 23 Netherlands 5 New Zealand 2 Nigeria 1 Belarus 3 Argentina 2 Slovakia 45 Singapore 6 China 2 Croatia 7 Italy 13 Germany 4 India 4 Lithuania 4 Ukraine 25 Hungary 16 Switzerland 4 Georgia 1