40 visiting now: 23 USA 
9 Singapore 
3 UK 
3 Canada 
3 China 
1 Ecuador 
1 Iran 
1 Brazil 
9 Singapore 3 UK 3 Canada 3 China 1 Ecuador 1 Iran 1 Brazil 9 Singapore 3 UK 3 Canada 3 China 1 Ecuador 1 Iran 1 Brazil