The corporate sponsors of a marketing study called “The Infinite Dial” describe it as “the longest-running survey of digital media consumer behavior in America.” The 2019 survey report, which Edison Research and Triton Digital released earlier this year, focuses largely on podcasting, social media, smart speakers, and online audio content. However, it does number audiobook-listening among other digital behaviors.

https://www.arts.gov/art-works/2019/taking-note-how-do-we-read-let’s-count-ways