34 visiting now: 17 Belgium 
10 USA 
3 Russia 
2 China 
2 UK 
2 Taiwan 
1 Finland 
1 Netherlands 
1 Australia 
1 Singapore 
1 Canada 
10 USA 3 Russia 2 China 2 UK 2 Taiwan 1 Finland 1 Netherlands 1 Australia 1 Singapore 1 Canada