22 visiting now: 11 USA 
3 Russia 
2 UK 
1 France 
1 Latvia 
1 Belgium 
1 Netherlands 
1 Vietnam 
1 China 
3 Russia 2 UK 1 France 1 Latvia 1 Belgium 1 Netherlands 1 Vietnam 1 China 3 Russia 2 UK 1 France 1 Latvia 1 Belgium 1 Netherlands 1 Vietnam 1 China