64 visiting now: 52 USA 
6 Singapore 
3 UK 
2 Argentina 
2 Hong Kong 
1 Australia 
1 China 
1 India 
6 Singapore 3 UK 2 Argentina 2 Hong Kong 1 Australia 1 China 1 India 6 Singapore 3 UK 2 Argentina 2 Hong Kong 1 Australia 1 China 1 India