40 visiting now: 16 USA 
10 China 
3 UK 
3 France 
3 Singapore 
2 Bangladesh 
1 Brazil 
1 Netherlands 
1 Germany 
10 China 3 UK 3 France 3 Singapore 2 Bangladesh 1 Brazil 1 Netherlands 1 Germany 10 China 3 UK 3 France 3 Singapore 2 Bangladesh 1 Brazil 1 Netherlands 1 Germany