48 visiting now: 31 USA 
5 Singapore 
4 China 
2 Ukraine 
2 Germany 
1 UK 
1 France 
1 Russia 
1 Brazil 
1 Spain 
5 Singapore 4 China 2 Ukraine 2 Germany 1 UK 1 France 1 Russia 1 Brazil 1 Spain 5 Singapore 4 China 2 Ukraine 2 Germany 1 UK 1 France 1 Russia 1 Brazil 1 Spain