69 visiting now: 34 USA 
6 Singapore 
5 Canada 
5 China 
4 Czech Republic 
4 Brazil 
3 UK 
3 Mexico 
2 Germany 
2 Hong Kong 
1 Romania 
1 Lithuania 
1 Ecuador 
1 Australia 
1 Oman 
1 Finland 
6 Singapore 5 Canada 5 China 4 Czech Republic 4 Brazil 3 UK 3 Mexico 2 Germany 2 Hong Kong 1 Romania 1 Lithuania 1 Ecuador 1 Australia 1 Oman 1 Finland