50 visiting now: 29 USA 
8 Singapore 
6 China 
4 France 
2 India 
2 Canada 
1 Finland 
1 Germany 
1 Russia 
8 Singapore 6 China 4 France 2 India 2 Canada 1 Finland 1 Germany 1 Russia 8 Singapore 6 China 4 France 2 India 2 Canada 1 Finland 1 Germany 1 Russia