26 visiting now: 12 USA 
3 Russia 
2 UK 
2 Brazil 
1 Australia 
1 China 
1 Singapore 
1 Belgium 
1 Germany 
1 Luxembourg 
1 Switzerland 
3 Russia 2 UK 2 Brazil 1 Australia 1 China 1 Singapore 1 Belgium 1 Germany 1 Luxembourg 1 Switzerland