2018: Barham, Tanner, Brasher (link)
2019: Muir, Madden (link)
2020: Sheedy, Wellman
Hmm, it seems there might be seven. Not sure exactly what “Brasher and Tanner re-elected to their positions” means in the first article though. Tanner is obviously now gone, replaced by Dorothy, so its back to 6.