20 visiting now: 7 USA 
4 Belgium 
2 Pakistan 
1 Vietnam 
1 Chile 
1 Japan 
1 China 
1 Germany 
1 Brazil 
1 Iraq 
4 Belgium 2 Pakistan 1 Vietnam 1 Chile 1 Japan 1 China 1 Germany 1 Brazil 1 Iraq 4 Belgium 2 Pakistan 1 Vietnam 1 Chile 1 Japan 1 China 1 Germany 1 Brazil 1 Iraq