40 visiting now: 24 USA 
8 Canada 
2 Singapore 
2 UK 
1 Germany 
1 Poland 
1 Russia 
1 China 
1 Finland 
8 Canada 2 Singapore 2 UK 1 Germany 1 Poland 1 Russia 1 China 1 Finland 8 Canada 2 Singapore 2 UK 1 Germany 1 Poland 1 Russia 1 China 1 Finland