50 visiting now: 31 USA 
9 Singapore 
3 Brazil 
2 Canada 
2 UK 
1 Vietnam 
1 China 
1 Germany 
1 Argentina 
1 Belgium 
9 Singapore 3 Brazil 2 Canada 2 UK 1 Vietnam 1 China 1 Germany 1 Argentina 1 Belgium 9 Singapore 3 Brazil 2 Canada 2 UK 1 Vietnam 1 China 1 Germany 1 Argentina 1 Belgium