The processing seems to be returning to something a bit more like the pre-pandemic pattern - where some (not many) went quite quickly, about half were done in ~6-7 months, and 80% done in 12 months. (Those that took longer were considered 'complex.')
I warn: it is very unlikely that all or most 2021 files will go so quickly. It doesn't mean there's something wrong if one stage or another takes a couple months longer - don't panic at differences to other files in the same month, it's not and never has been a first-in, first-out process. And there's still going to be more variability now than before the pandemic (some offices have bigger backlogs and ongoing lockdowns, etc). Interviews in particular seem to be a big hold-up and wildcard.