2021 TV audience figures released by F1. Note that the average audience per race has dipped and the unique/cumulative viewership has increased just marginally. : r/formula1
Analysis: Putting F1's TV ratings decline in context
Analysing the rise and fall of Formula 1's free-to-air presence in the UK – Motorsport Broadcasting
Formula 1 announces TV, race attendance and digital audience figures for 2021 | Formula 1®
F1 TV Audience Reverses By 40 Million Under New Measurement System
Formula 1 announces TV, race attendance and digital audience figures for 2021 | Formula 1®
The ratings picture: The 2013 Verdict so far – Motorsport Broadcasting
Sky's Australian Grand Prix coverage drives away with 526,000 viewers | TV ratings | The Guardian
Formula 1's unique viewership numbers over the years (2008-2021) : r/formula1
F1's 2021 Bahrain opener breaks Sky Sports viewership records - SportsPro
The ratings picture: The 2012 Verdict – Motorsport Broadcasting
F1 'reveals' drop in viewing figures - Pitpass.com
The ratings picture: The Verdict so Far – Motorsport Broadcasting
Formula 1 popularity explodes in U.S. as 2023 season begins
F1 viewers UK 2021 | Statista
Sports news viewing Barb
If You Ain't First, You're Last': Revenue-Over-Reach Argument Not Refuted for F1
How Many People Really Watch Formula One Online?
Sports news viewing Barb
File:Sky Sports viewing figures.png - Wikipedia
F1 2021: Bahrain GP breaks Sky Sports viewing records after Lewis Hamilton, Max Verstappen duel | F1 News
Formula 1 warned it could 'ruin itself' with switch to pay TV
Formula 1 TV ratings up 54% in America in record year Stateside : PlanetF1
