60 visiting now: 21 USA 
9 China 
8 Singapore 
3 UK 
3 Belgium 
2 Mexico 
2 Germany 
2 France 
2 Switzerland 
2 Lithuania 
1 Brazil 
1 Russia 
1 Nepal 
1 Canada 
1 Philippines 
1 Pakistan 
9 China 8 Singapore 3 UK 3 Belgium 2 Mexico 2 Germany 2 France 2 Switzerland 2 Lithuania 1 Brazil 1 Russia 1 Nepal 1 Canada 1 Philippines 1 Pakistan