67 visiting now: 43 USA 
8 Singapore 
4 India 
4 Australia 
2 Brazil 
2 Canada 
1 UK 
1 Hong Kong 
1 Ukraine 
1 Korea 
1 China 
1 Nigeria 
1 France 
1 Germany 
8 Singapore 4 India 4 Australia 2 Brazil 2 Canada 1 UK 1 Hong Kong 1 Ukraine 1 Korea 1 China 1 Nigeria 1 France 1 Germany