35 visiting now: 22 USA 
9 Singapore 
3 France 
2 Russia 
1 UK 
1 Brazil 
1 China 
1 Argentina 
9 Singapore 3 France 2 Russia 1 UK 1 Brazil 1 China 1 Argentina 9 Singapore 3 France 2 Russia 1 UK 1 Brazil 1 China 1 Argentina