27 visiting now: 12 USA 
5 China 
4 Singapore 
2 Taiwan 
1 Hong Kong 
1 India 
1 Brazil 
1 Russia 
5 China 4 Singapore 2 Taiwan 1 Hong Kong 1 India 1 Brazil 1 Russia 5 China 4 Singapore 2 Taiwan 1 Hong Kong 1 India 1 Brazil 1 Russia