42 visiting now: 22 USA 
10 Singapore 
3 Belgium 
3 Brazil 
3 Canada 
1 Iran 
1 Tunisia 
1 UK 
1 China 
10 Singapore 3 Belgium 3 Brazil 3 Canada 1 Iran 1 Tunisia 1 UK 1 China 10 Singapore 3 Belgium 3 Brazil 3 Canada 1 Iran 1 Tunisia 1 UK 1 China