49 visiting now: 30 USA 
8 Singapore 
5 Canada 
4 Brazil 
2 China 
1 Iran 
1 Belgium 
1 Ireland 
1 Russia 
1 UK 
1 Germany 
8 Singapore 5 Canada 4 Brazil 2 China 1 Iran 1 Belgium 1 Ireland 1 Russia 1 UK 1 Germany