40 visiting now: 28 USA 
9 Singapore 
3 Canada 
2 Belgium 
2 Russia 
2 China 
1 France 
1 Germany 
1 Brazil 
9 Singapore 3 Canada 2 Belgium 2 Russia 2 China 1 France 1 Germany 1 Brazil 9 Singapore 3 Canada 2 Belgium 2 Russia 2 China 1 France 1 Germany 1 Brazil