50 visiting now: 39 USA 
6 Singapore 
2 UK 
2 China 
1 Argentina 
1 Germany 
1 New Zealand 
1 Russia 
6 Singapore 2 UK 2 China 1 Argentina 1 Germany 1 New Zealand 1 Russia 6 Singapore 2 UK 2 China 1 Argentina 1 Germany 1 New Zealand 1 Russia