57 visiting now: 28 USA 
10 Singapore 
4 Canada 
4 Brazil 
2 India 
2 Vietnam 
2 Russia 
2 Germany 
1 Ukraine 
1 Iraq 
1 China 
1 Japan 
1 Ecuador 
1 Argentina 
1 Lithuania 
1 France 
1 Australia 
10 Singapore 4 Canada 4 Brazil 2 India 2 Vietnam 2 Russia 2 Germany 1 Ukraine 1 Iraq 1 China 1 Japan 1 Ecuador 1 Argentina 1 Lithuania 1 France 1 Australia