56 visiting now: 37 USA 
6 Singapore 
3 UK 
3 Brazil 
2 China 
1 France 
1 Germany 
1 Australia 
1 Ireland 
1 Russia 
1 Canada 
6 Singapore 3 UK 3 Brazil 2 China 1 France 1 Germany 1 Australia 1 Ireland 1 Russia 1 Canada