73 visiting now: 36 USA 
21 Canada 
10 Singapore 
2 Germany 
2 Brazil 
2 China 
1 Saudi Arabia 
1 Tunisia 
1 Czech Republic 
1 Egypt 
1 Algeria 
1 Vietnam 
21 Canada 10 Singapore 2 Germany 2 Brazil 2 China 1 Saudi Arabia 1 Tunisia 1 Czech Republic 1 Egypt 1 Algeria 1 Vietnam