75 visiting now: 35 USA 
21 Canada 
11 Singapore 
3 China 
2 Czech Republic 
2 Germany 
2 Brazil 
1 Tunisia 
1 UK 
1 Algeria 
1 Peru 
1 Vietnam 
1 Saudi Arabia 
21 Canada 11 Singapore 3 China 2 Czech Republic 2 Germany 2 Brazil 1 Tunisia 1 UK 1 Algeria 1 Peru 1 Vietnam 1 Saudi Arabia