53 visiting now: 35 USA 
10 Singapore 
4 UK 
4 Hong Kong 
2 Australia 
1 Canada 
1 China 
1 Germany 
1 Ireland 
10 Singapore 4 UK 4 Hong Kong 2 Australia 1 Canada 1 China 1 Germany 1 Ireland 10 Singapore 4 UK 4 Hong Kong 2 Australia 1 Canada 1 China 1 Germany 1 Ireland