44 visiting now: 21 USA 
13 China 
2 India 
2 Netherlands 
2 Brazil 
1 Indonesia 
1 Germany 
1 Luxembourg 
1 Hong Kong 
13 China 2 India 2 Netherlands 2 Brazil 1 Indonesia 1 Germany 1 Luxembourg 1 Hong Kong 13 China 2 India 2 Netherlands 2 Brazil 1 Indonesia 1 Germany 1 Luxembourg 1 Hong Kong