40 visiting now: 17 USA 
6 Brazil 
4 UK 
4 China 
2 India 
2 Netherlands 
1 France 
1 Russia 
1 Iran 
1 Germany 
1 Argentina 
6 Brazil 4 UK 4 China 2 India 2 Netherlands 1 France 1 Russia 1 Iran 1 Germany 1 Argentina