61 visiting now: 37 USA 
11 Singapore 
5 China 
2 UK 
2 India 
2 Australia 
1 Canada 
1 Finland 
1 Germany 
1 Nigeria 
11 Singapore 5 China 2 UK 2 India 2 Australia 1 Canada 1 Finland 1 Germany 1 Nigeria 11 Singapore 5 China 2 UK 2 India 2 Australia 1 Canada 1 Finland 1 Germany 1 Nigeria