80 visiting now: 31 USA 
22 China 
10 India 
5 Brazil 
4 Netherlands 
2 Spain 
1 Australia 
1 Singapore 
1 France 
1 Taiwan 
1 UK 
1 Germany 
22 China 10 India 5 Brazil 4 Netherlands 2 Spain 1 Australia 1 Singapore 1 France 1 Taiwan 1 UK 1 Germany