48 visiting now: 37 USA 
7 Singapore 
4 Canada 
2 China 
1 New Zealand 
1 Russia 
1 UK 
1 Finland 
7 Singapore 4 Canada 2 China 1 New Zealand 1 Russia 1 UK 1 Finland 7 Singapore 4 Canada 2 China 1 New Zealand 1 Russia 1 UK 1 Finland