32 visiting now: 13 USA 
8 Singapore 
4 Canada 
4 China 
3 France 
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2 UK 
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8 Singapore 4 Canada 4 China 3 France 2 Hong Kong 2 UK 1 Germany 1 Russia 8 Singapore 4 Canada 4 China 3 France 2 Hong Kong 2 UK 1 Germany 1 Russia