48 visiting now: 37 USA 
6 Singapore 
2 Australia 
2 UK 
2 China 
1 Sweden 
1 Taiwan 
1 Canada 
1 Ireland 
6 Singapore 2 Australia 2 UK 2 China 1 Sweden 1 Taiwan 1 Canada 1 Ireland 6 Singapore 2 Australia 2 UK 2 China 1 Sweden 1 Taiwan 1 Canada 1 Ireland