40 visiting now: 23 USA 
8 Singapore 
4 Canada 
3 UK 
2 Germany 
1 Australia 
1 Zimbabwe 
1 China 
8 Singapore 4 Canada 3 UK 2 Germany 1 Australia 1 Zimbabwe 1 China 8 Singapore 4 Canada 3 UK 2 Germany 1 Australia 1 Zimbabwe 1 China