43 visiting now: 20 USA 
5 China 
4 Brazil 
3 Singapore 
2 Hong Kong 
2 South Africa 
1 Argentina 
1 Nicaragua 
1 Germany 
1 Bolivia 
1 Uzbekistan 
1 Serbia 
1 Ghana 
1 Canada 
1 Slovakia 
1 Iraq 
1 Japan 
1 Colombia 
5 China 4 Brazil 3 Singapore 2 Hong Kong 2 South Africa 1 Argentina 1 Nicaragua 1 Germany 1 Bolivia 1 Uzbekistan 1 Serbia 1 Ghana 1 Canada 1 Slovakia 1 Iraq 1 Japan 1 Colombia