27 visiting now: 12 USA 
4 Singapore 
4 Russia 
2 China 
1 Egypt 
1 Brazil 
1 Georgia 
1 Vietnam 
1 Germany 
4 Singapore 4 Russia 2 China 1 Egypt 1 Brazil 1 Georgia 1 Vietnam 1 Germany 4 Singapore 4 Russia 2 China 1 Egypt 1 Brazil 1 Georgia 1 Vietnam 1 Germany