41 visiting now: 22 USA 
8 Singapore 
2 Germany 
2 Belgium 
1 Canada 
1 China 
1 UK 
1 Japan 
1 Australia 
1 Korea 
1 Poland 
8 Singapore 2 Germany 2 Belgium 1 Canada 1 China 1 UK 1 Japan 1 Australia 1 Korea 1 Poland