20 visiting now: 8 USA 
2 Vietnam 
2 China 
2 Germany 
2 Belgium 
1 Pakistan 
1 Costa Rica 
1 Tunisia 
1 India 
2 Vietnam 2 China 2 Germany 2 Belgium 1 Pakistan 1 Costa Rica 1 Tunisia 1 India 2 Vietnam 2 China 2 Germany 2 Belgium 1 Pakistan 1 Costa Rica 1 Tunisia 1 India