36 visiting now: 21 USA 
6 Singapore 
4 Belgium 
3 UK 
1 Brazil 
1 El Salvador 
1 Iraq 
1 Russia 
6 Singapore 4 Belgium 3 UK 1 Brazil 1 El Salvador 1 Iraq 1 Russia 6 Singapore 4 Belgium 3 UK 1 Brazil 1 El Salvador 1 Iraq 1 Russia