63 visiting now: 35 USA 
10 Russia 
10 Singapore 
6 Ukraine 
4 Australia 
4 China 
4 UK 
2 India 
1 Austria 
1 Germany 
1 Nigeria 
10 Russia 10 Singapore 6 Ukraine 4 Australia 4 China 4 UK 2 India 1 Austria 1 Germany 1 Nigeria