51 visiting now: 36 USA 
9 Singapore 
2 China 
1 Ireland 
1 Australia 
1 Italy 
1 Canada 
1 Sweden 
1 Finland 
1 UK 
1 Germany 
9 Singapore 2 China 1 Ireland 1 Australia 1 Italy 1 Canada 1 Sweden 1 Finland 1 UK 1 Germany