53 visiting now: 33 USA 
8 Singapore 
5 UK 
5 Germany 
3 Canada 
2 Belgium 
1 China 
1 Vietnam 
1 Hong Kong 
1 Russia 
1 Brazil 
8 Singapore 5 UK 5 Germany 3 Canada 2 Belgium 1 China 1 Vietnam 1 Hong Kong 1 Russia 1 Brazil