57 visiting now: 36 USA 
10 Canada 
8 Singapore 
3 UK 
1 China 
1 Finland 
1 Germany 
1 Russia 
10 Canada 8 Singapore 3 UK 1 China 1 Finland 1 Germany 1 Russia 10 Canada 8 Singapore 3 UK 1 China 1 Finland 1 Germany 1 Russia