57 visiting now: 34 USA 
6 China 
4 France 
4 UK 
4 India 
2 Germany 
2 Brazil 
2 Canada 
2 Singapore 
1 Bangladesh 
1 Mexico 
1 Chile 
1 Australia 
1 Turkey 
6 China 4 France 4 UK 4 India 2 Germany 2 Brazil 2 Canada 2 Singapore 1 Bangladesh 1 Mexico 1 Chile 1 Australia 1 Turkey