57 visiting now: 37 USA 
10 Singapore 
3 Canada 
3 UK 
2 Germany 
2 India 
1 Ukraine 
1 Australia 
1 Brazil 
1 Netherlands 
1 China 
1 Finland 
10 Singapore 3 Canada 3 UK 2 Germany 2 India 1 Ukraine 1 Australia 1 Brazil 1 Netherlands 1 China 1 Finland