45 visiting now: 36 USA 
4 China 
3 France 
2 Singapore 
2 UK 
2 India 
2 Canada 
1 Germany 
1 Australia 
1 Russia 
4 China 3 France 2 Singapore 2 UK 2 India 2 Canada 1 Germany 1 Australia 1 Russia 4 China 3 France 2 Singapore 2 UK 2 India 2 Canada 1 Germany 1 Australia 1 Russia