45 visiting now: 23 USA 
9 Singapore 
2 India 
2 Nigeria 
2 Canada 
2 China 
2 France 
2 UK 
2 Germany 
1 Brazil 
1 Russia 
1 Belgium 
9 Singapore 2 India 2 Nigeria 2 Canada 2 China 2 France 2 UK 2 Germany 1 Brazil 1 Russia 1 Belgium