47 visiting now: 22 USA 
10 Singapore 
7 Canada 
4 UK 
2 China 
2 France 
2 Belgium 
1 Iran 
10 Singapore 7 Canada 4 UK 2 China 2 France 2 Belgium 1 Iran 10 Singapore 7 Canada 4 UK 2 China 2 France 2 Belgium 1 Iran