72 visiting now: 31 USA 
17 China 
9 Singapore 
5 India 
4 UK 
4 France 
2 Australia 
1 Ukraine 
1 Germany 
17 China 9 Singapore 5 India 4 UK 4 France 2 Australia 1 Ukraine 1 Germany 17 China 9 Singapore 5 India 4 UK 4 France 2 Australia 1 Ukraine 1 Germany