28 visiting now: 10 Singapore 
6 USA 
5 UK 
3 Brazil 
2 France 
2 Belgium 
1 China 
1 Japan 
6 USA 5 UK 3 Brazil 2 France 2 Belgium 1 China 1 Japan 6 USA 5 UK 3 Brazil 2 France 2 Belgium 1 China 1 Japan