63 visiting now: 45 USA 
15 Canada 
5 Singapore 
4 China 
1 UK 
1 Germany 
1 Ireland 
1 Russia 
15 Canada 5 Singapore 4 China 1 UK 1 Germany 1 Ireland 1 Russia 15 Canada 5 Singapore 4 China 1 UK 1 Germany 1 Ireland 1 Russia