The FTA has their transit agency profiles, but the most recent year is only 2021. https://www.transit.dot.gov/ntd/transit-agency-profiles I'll be curious to see more recent years as well.

QLine [[in millions)
2021 - 0.006
2020 - 0.4
2019 - 1.1

People Mover
2021 - 0
2020 - 0.9
2019 - 1.7

DDOT
2021 - 8.8
2020 - 18.7
2019 - 22.7

SMART
2021 - 3.2
2020 - 7.6
2019 - 9.0