44 visiting now: 26 USA 
6 Singapore 
5 Canada 
4 UK 
2 Argentina 
2 China 
2 Russia 
1 Australia 
6 Singapore 5 Canada 4 UK 2 Argentina 2 China 2 Russia 1 Australia 6 Singapore 5 Canada 4 UK 2 Argentina 2 China 2 Russia 1 Australia