56 visiting now: 24 USA 
8 Singapore 
6 Canada 
6 China 
6 Belgium 
3 India 
1 Iraq 
1 Poland 
1 Finland 
1 Germany 
8 Singapore 6 Canada 6 China 6 Belgium 3 India 1 Iraq 1 Poland 1 Finland 1 Germany 8 Singapore 6 Canada 6 China 6 Belgium 3 India 1 Iraq 1 Poland 1 Finland 1 Germany