74 visiting now: 43 USA 
7 Singapore 
6 Canada 
3 China 
2 Czech Republic 
2 UK 
2 Germany 
2 Argentina 
1 Australia 
1 Morocco 
1 Egypt 
1 Belgium 
1 Uruguay 
1 Netherlands 
1 France 
1 Brazil 
1 Russia 
1 Saudi Arabia 
1 Japan 
1 Latvia 
7 Singapore 6 Canada 3 China 2 Czech Republic 2 UK 2 Germany 2 Argentina 1 Australia 1 Morocco 1 Egypt 1 Belgium 1 Uruguay 1 Netherlands 1 France 1 Brazil 1 Russia 1 Saudi Arabia 1 Japan 1 Latvia