40 visiting now: 20 USA 
8 Singapore 
4 UK 
4 China 
3 Canada 
1 Zimbabwe 
1 Germany 
1 Russia 
1 Belgium 
8 Singapore 4 UK 4 China 3 Canada 1 Zimbabwe 1 Germany 1 Russia 1 Belgium 8 Singapore 4 UK 4 China 3 Canada 1 Zimbabwe 1 Germany 1 Russia 1 Belgium