81 visiting now: 33 USA 
16 China 
6 Brazil 
4 Netherlands 
4 UK 
4 Singapore 
3 France 
3 India 
2 Bangladesh 
2 Taiwan 
1 Germany 
1 Romania 
1 Hong Kong 
1 Argentina 
16 China 6 Brazil 4 Netherlands 4 UK 4 Singapore 3 France 3 India 2 Bangladesh 2 Taiwan 1 Germany 1 Romania 1 Hong Kong 1 Argentina