72 visiting now: 37 USA 
8 Singapore 
5 UK 
5 Czech Republic 
5 Germany 
4 Canada 
4 China 
2 Latvia 
1 Netherlands 
1 Venezuela 
1 Russia 
1 France 
1 Australia 
1 Thailand 
1 Brazil 
8 Singapore 5 UK 5 Czech Republic 5 Germany 4 Canada 4 China 2 Latvia 1 Netherlands 1 Venezuela 1 Russia 1 France 1 Australia 1 Thailand 1 Brazil