<https://freakonomics.com/2009/05/what-does-the-human-development-index-measure/#article>
<http://schema.org/image>
<https://freakonomics.com/2009/05/what-does-the-human-development-index-measure/#primaryimage>
<https://freakonomics.com/2009/05/what-does-the-human-development-index-measure/>