43 visiting now: 27 USA 
10 Singapore 
3 France 
2 UK 
2 Brazil 
2 China 
1 Saudi Arabia 
1 Argentina 
10 Singapore 3 France 2 UK 2 Brazil 2 China 1 Saudi Arabia 1 Argentina 10 Singapore 3 France 2 UK 2 Brazil 2 China 1 Saudi Arabia 1 Argentina