38 visiting now: 21 USA 
8 Singapore 
4 Brazil 
2 China 
2 Germany 
1 Iran 
1 Japan 
1 Canada 
8 Singapore 4 Brazil 2 China 2 Germany 1 Iran 1 Japan 1 Canada 8 Singapore 4 Brazil 2 China 2 Germany 1 Iran 1 Japan 1 Canada