53 visiting now: 29 USA 
7 Singapore 
5 China 
3 France 
3 Canada 
2 UK 
1 Finland 
1 Germany 
1 Australia 
1 India 
7 Singapore 5 China 3 France 3 Canada 2 UK 1 Finland 1 Germany 1 Australia 1 India 7 Singapore 5 China 3 France 3 Canada 2 UK 1 Finland 1 Germany 1 Australia 1 India