Year Average weekly terrestrial listenership
2005 25,300,000
2006 25,500,000
2007 25,500,000
2008 26,400,000
2009 26,400,000
2010 27,200,000
2011 26,800,000
2012 26,000,000
2013 27,300,000
2014 26,200,000
2015 26,000,000

Source: NPR, based on data from Nielsen Audio Nationwide, for persons 12+.
“State of the News Media 2016”