39 visiting now: 34 USA 
3 China 
2 Brazil 
2 UK 
1 Ukraine 
1 Germany 
1 India 
1 Australia 
1 Singapore 
1 Sweden 
1 Canada 
3 China 2 Brazil 2 UK 1 Ukraine 1 Germany 1 India 1 Australia 1 Singapore 1 Sweden 1 Canada