Amazing how many notable retirements there has been at the end of the 2022 season.
Number of riders to retire from the pro peloton who were in the top 100 of active riders with most wins at the end of their final season:
2016: 15
2017: 11
2018: 11
2019: 11
2020: 8
2021: 6
2022: 18
If we go by top 50 it's:
2016: 8 (Cancellara, Purito, Bos, Chicchi, Hutarovich, Brown, Fédrigo, Ciolek)
2017: 7 (Boonen, Contador, Voeckler, Napolitano, Farrar, Samu, Vicioso)
2018: 4 (Chavanel, Cunego, Gerrans, (Italian) Pozzato)
2019: 5 (Kittel, Bennati, Guardini, S Dumoulin, Plaza)
2020: 3 (Albasini, Ventoso, Benfatto)
2021: 3 (Greipel, T Martin, D Martin)
2022: 7 (Valverde, Gilbert, Nibali, Modolo, Colbrelli, Visconti, Porte)