35 visiting now: 23 USA 
9 Singapore 
5 Russia 
2 Brazil 
2 UK 
2 China 
2 Germany 
1 Canada 
9 Singapore 5 Russia 2 Brazil 2 UK 2 China 2 Germany 1 Canada 9 Singapore 5 Russia 2 Brazil 2 UK 2 China 2 Germany 1 Canada