57 visiting now: 21 USA 
20 Belgium 
7 China 
3 Vietnam 
2 Russia 
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1 India 
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20 Belgium 7 China 3 Vietnam 2 Russia 1 Germany 1 UK 1 India 1 Philippines 20 Belgium 7 China 3 Vietnam 2 Russia 1 Germany 1 UK 1 India 1 Philippines