81 visiting now: 71 USA 
5 Canada 
2 China 
2 Singapore 
1 Brazil 
1 UK 
1 Hong Kong 
1 India 
5 Canada 2 China 2 Singapore 1 Brazil 1 UK 1 Hong Kong 1 India 5 Canada 2 China 2 Singapore 1 Brazil 1 UK 1 Hong Kong 1 India