81 visiting now: 43 USA 
9 Singapore 
8 Germany 
6 Brazil 
5 UK 
4 Australia 
4 Canada 
3 India 
2 Ukraine 
1 New Zealand 
1 China 
9 Singapore 8 Germany 6 Brazil 5 UK 4 Australia 4 Canada 3 India 2 Ukraine 1 New Zealand 1 China