Astyanax
Well it is to include the full year of 2020, so the earliest possible release anyway would have been January 1, 2021.
It is reasonable to allow at least another year to collect data from a myriad of sources, collate, analyze, cross-circuiting….
Scotty: “Captain, thank heaven!”
Spock: “Mr. Scott, there was no deity involved. It was my cross-circuiting to B that recovered them.”
Scotty: “Well, then, thank pitchforks and pointed ears!”
So while it would indeed be more optimal to have somewhat recent data, info from the year 2020 isn’t too bad.