52 visiting now: 31 USA 
8 Singapore 
5 China 
3 France 
2 UK 
2 Ukraine 
2 Canada 
1 Finland 
1 Germany 
1 Russia 
8 Singapore 5 China 3 France 2 UK 2 Ukraine 2 Canada 1 Finland 1 Germany 1 Russia 8 Singapore 5 China 3 France 2 UK 2 Ukraine 2 Canada 1 Finland 1 Germany 1 Russia