44 visiting now: 30 USA 
10 Singapore 
5 Belgium 
2 Russia 
2 Canada 
2 China 
1 France 
1 Germany 
1 Brazil 
10 Singapore 5 Belgium 2 Russia 2 Canada 2 China 1 France 1 Germany 1 Brazil 10 Singapore 5 Belgium 2 Russia 2 Canada 2 China 1 France 1 Germany 1 Brazil