33 visiting now: 14 USA 
11 Singapore 
5 UK 
3 Canada 
1 Belgium 
1 China 
1 Hong Kong 
1 Iran 
11 Singapore 5 UK 3 Canada 1 Belgium 1 China 1 Hong Kong 1 Iran 11 Singapore 5 UK 3 Canada 1 Belgium 1 China 1 Hong Kong 1 Iran