57 visiting now: 23 USA 
15 China 
3 Singapore 
3 Brazil 
3 Russia 
2 France 
2 Canada 
2 India 
2 Bangladesh 
1 Hong Kong 
1 UK 
15 China 3 Singapore 3 Brazil 3 Russia 2 France 2 Canada 2 India 2 Bangladesh 1 Hong Kong 1 UK