39 visiting now: 23 USA 
7 Canada 
4 Singapore 
2 UK 
1 Finland 
1 Hong Kong 
1 Australia 
1 China 
7 Canada 4 Singapore 2 UK 1 Finland 1 Hong Kong 1 Australia 1 China 7 Canada 4 Singapore 2 UK 1 Finland 1 Hong Kong 1 Australia 1 China