52 visiting now: 29 USA 
11 Singapore 
4 Brazil 
3 UK 
3 France 
2 China 
2 Belgium 
1 Argentina 
1 New Zealand 
1 Australia 
1 Russia 
11 Singapore 4 Brazil 3 UK 3 France 2 China 2 Belgium 1 Argentina 1 New Zealand 1 Australia 1 Russia