52 visiting now: 30 USA 
9 Singapore 
3 India 
3 China 
2 Australia 
2 Canada 
2 UK 
1 Germany 
1 Russia 
1 Finland 
9 Singapore 3 India 3 China 2 Australia 2 Canada 2 UK 1 Germany 1 Russia 1 Finland 9 Singapore 3 India 3 China 2 Australia 2 Canada 2 UK 1 Germany 1 Russia 1 Finland