54 visiting now: 31 USA 
9 Singapore 
7 China 
4 UK 
2 Canada 
1 Denmark 
1 Finland 
1 Germany 
1 Russia 
9 Singapore 7 China 4 UK 2 Canada 1 Denmark 1 Finland 1 Germany 1 Russia 9 Singapore 7 China 4 UK 2 Canada 1 Denmark 1 Finland 1 Germany 1 Russia