58 visiting now: 28 USA 
8 Singapore 
6 India 
5 China 
3 Ukraine 
3 Australia 
2 UK 
2 Hong Kong 
1 Taiwan 
1 Finland 
1 Argentina 
1 Russia 
1 Brazil 
8 Singapore 6 India 5 China 3 Ukraine 3 Australia 2 UK 2 Hong Kong 1 Taiwan 1 Finland 1 Argentina 1 Russia 1 Brazil