48 visiting now: 31 USA 
9 Canada 
3 Singapore 
2 UK 
2 China 
2 Germany 
1 Finland 
1 Taiwan 
9 Canada 3 Singapore 2 UK 2 China 2 Germany 1 Finland 1 Taiwan 9 Canada 3 Singapore 2 UK 2 China 2 Germany 1 Finland 1 Taiwan