What was the methodology used for your Publishers, Songwriters and CMOs Revenue infographic?

Economist Will Page used publicly available data from the 2020 IFPI Global Music Report to reverse engineer payments to songwriters, publishers, and their CMOs for revenues that came from the consumer, namely purchasing CDs and downloads, and listening to ads on or subscribing to streaming services. The methodology factored in regional differences in licensing and trends in the terms of trade between rights user and holder.