29 visiting now: 16 USA 
4 UK 
4 Canada 
2 Russia 
2 Singapore 
1 China 
1 Germany 
1 Australia 
1 Taiwan 
4 UK 4 Canada 2 Russia 2 Singapore 1 China 1 Germany 1 Australia 1 Taiwan 4 UK 4 Canada 2 Russia 2 Singapore 1 China 1 Germany 1 Australia 1 Taiwan