72 visiting now: 33 USA 
12 Singapore 
7 Belgium 
5 Australia 
5 India 
4 Canada 
4 China 
3 UK 
1 Vietnam 
1 Ireland 
1 Russia 
1 Finland 
1 Germany 
12 Singapore 7 Belgium 5 Australia 5 India 4 Canada 4 China 3 UK 1 Vietnam 1 Ireland 1 Russia 1 Finland 1 Germany