{"type":"rich","version":"1.0","provider_name":"Datawrapper","provider_url":"https://datawrapper.de","title":"Diminishing returns","html":"<iframe title=\"Diminishing returns\" aria-label=\"Grouped column chart\" id=\"datawrapper-chart-fROWC\" src=\"https://datawrapper.dwcdn.net/fROWC/1/\" scrolling=\"no\" frameborder=\"0\" style=\"width: 0; min-width: 100% !important; border: none;\" height=\"536\" data-external=\"1\"></iframe><script type=\"text/javascript\">window.addEventListener(\"message\",function(a){if(void 0!==a.data[\"datawrapper-height\"]){var e=document.querySelectorAll(\"iframe\");for(var t in a.data[\"datawrapper-height\"])for(var r,i=0;r=e[i];i++)if(r.contentWindow===a.source){var d=a.data[\"datawrapper-height\"][t]+\"px\";r.style.height=d}}});</script>","width":684,"height":536}