45 visiting now: 26 USA 
9 Singapore 
4 China 
2 Poland 
2 UK 
1 Brazil 
1 Canada 
1 Turkey 
1 France 
1 Iran 
9 Singapore 4 China 2 Poland 2 UK 1 Brazil 1 Canada 1 Turkey 1 France 1 Iran 9 Singapore 4 China 2 Poland 2 UK 1 Brazil 1 Canada 1 Turkey 1 France 1 Iran