54 visiting now: 24 USA 
11 China 
7 Singapore 
4 India 
4 UK 
2 Canada 
1 Australia 
1 Finland 
1 Germany 
11 China 7 Singapore 4 India 4 UK 2 Canada 1 Australia 1 Finland 1 Germany 11 China 7 Singapore 4 India 4 UK 2 Canada 1 Australia 1 Finland 1 Germany