25 visiting now: 8 USA 
6 China 
5 India 
2 Vietnam 
1 Brazil 
1 Hong Kong 
1 Belgium 
1 Israel 
6 China 5 India 2 Vietnam 1 Brazil 1 Hong Kong 1 Belgium 1 Israel 6 China 5 India 2 Vietnam 1 Brazil 1 Hong Kong 1 Belgium 1 Israel