50 visiting now: 24 USA 
9 China 
9 Singapore 
4 Canada 
1 France 
1 Germany 
1 Belgium 
1 Brazil 
1 UK 
9 China 9 Singapore 4 Canada 1 France 1 Germany 1 Belgium 1 Brazil 1 UK 9 China 9 Singapore 4 Canada 1 France 1 Germany 1 Belgium 1 Brazil 1 UK