52 visiting now: 26 USA 
8 Singapore 
6 Canada 
5 China 
4 UK 
1 Iran 
1 Belgium 
1 Brazil 
1 Vietnam 
1 India 
8 Singapore 6 Canada 5 China 4 UK 1 Iran 1 Belgium 1 Brazil 1 Vietnam 1 India 8 Singapore 6 Canada 5 China 4 UK 1 Iran 1 Belgium 1 Brazil 1 Vietnam 1 India