40 visiting now: 18 USA 
9 Singapore 
5 Canada 
4 UK 
1 Japan 
1 Finland 
1 Vietnam 
1 Germany 
9 Singapore 5 Canada 4 UK 1 Japan 1 Finland 1 Vietnam 1 Germany 9 Singapore 5 Canada 4 UK 1 Japan 1 Finland 1 Vietnam 1 Germany