66 visiting now: 39 USA 
7 Singapore 
4 India 
4 Australia 
3 China 
3 UK 
3 France 
2 Ukraine 
2 Brazil 
1 Colombia 
1 Finland 
1 Argentina 
1 Germany 
7 Singapore 4 India 4 Australia 3 China 3 UK 3 France 2 Ukraine 2 Brazil 1 Colombia 1 Finland 1 Argentina 1 Germany