63 visiting now: 31 USA 
10 China 
8 Singapore 
6 Canada 
3 Russia 
2 Poland 
2 Vietnam 
1 Germany 
1 UK 
1 India 
1 Australia 
1 Ukraine 
1 Japan 
1 Brazil 
10 China 8 Singapore 6 Canada 3 Russia 2 Poland 2 Vietnam 1 Germany 1 UK 1 India 1 Australia 1 Ukraine 1 Japan 1 Brazil