41 visiting now: 27 USA 
7 Singapore 
3 Brazil 
2 China 
2 Canada 
1 Iran 
1 Argentina 
1 Belgium 
1 UK 
7 Singapore 3 Brazil 2 China 2 Canada 1 Iran 1 Argentina 1 Belgium 1 UK 7 Singapore 3 Brazil 2 China 2 Canada 1 Iran 1 Argentina 1 Belgium 1 UK