30 visiting now: 23 USA 
4 Singapore 
1 Mexico 
1 Canada 
1 UK 
1 China 
1 Finland 
1 Germany 
4 Singapore 1 Mexico 1 Canada 1 UK 1 China 1 Finland 1 Germany 4 Singapore 1 Mexico 1 Canada 1 UK 1 China 1 Finland 1 Germany