27 visiting now: 20 USA 
3 UK 
2 Singapore 
2 China 
1 Finland 
1 Germany 
1 Russia 
1 Canada 
3 UK 2 Singapore 2 China 1 Finland 1 Germany 1 Russia 1 Canada 3 UK 2 Singapore 2 China 1 Finland 1 Germany 1 Russia 1 Canada