40 visiting now: 24 USA 
7 Singapore 
3 UK 
2 Hong Kong 
2 Australia 
2 Germany 
1 Ukraine 
1 Japan 
1 Saudi Arabia 
7 Singapore 3 UK 2 Hong Kong 2 Australia 2 Germany 1 Ukraine 1 Japan 1 Saudi Arabia 7 Singapore 3 UK 2 Hong Kong 2 Australia 2 Germany 1 Ukraine 1 Japan 1 Saudi Arabia