28 visiting now: 10 USA 
9 Singapore 
4 Brazil 
4 France 
2 Belgium 
2 UK 
2 China 
1 Kenya 
1 Russia 
9 Singapore 4 Brazil 4 France 2 Belgium 2 UK 2 China 1 Kenya 1 Russia 9 Singapore 4 Brazil 4 France 2 Belgium 2 UK 2 China 1 Kenya 1 Russia