57 visiting now: 38 USA 
10 Canada 
6 Singapore 
1 Australia 
1 UK 
1 China 
1 Germany 
1 Russia 
10 Canada 6 Singapore 1 Australia 1 UK 1 China 1 Germany 1 Russia 10 Canada 6 Singapore 1 Australia 1 UK 1 China 1 Germany 1 Russia