56 visiting now: 32 USA 
7 Singapore 
5 UK 
4 Brazil 
3 China 
2 Belgium 
1 Canada 
1 Vietnam 
1 Germany 
1 Argentina 
1 Morocco 
7 Singapore 5 UK 4 Brazil 3 China 2 Belgium 1 Canada 1 Vietnam 1 Germany 1 Argentina 1 Morocco