47 visiting now: 39 USA 
4 Singapore 
2 Canada 
2 UK 
1 Russia 
1 Germany 
1 Hong Kong 
1 Japan 
4 Singapore 2 Canada 2 UK 1 Russia 1 Germany 1 Hong Kong 1 Japan 4 Singapore 2 Canada 2 UK 1 Russia 1 Germany 1 Hong Kong 1 Japan