Some interesting ideas here Revell will need to do something different for sure.
I think this was true of the boomer generation as well. We were all wrapped up in our "youth culture", still suffering from that today as we refuse to age! Our parents and previous generations were too busy fighting off the Depression and Hitler to be obsessed with themselves.
I go with the year finished. I keep a spreadsheet that calculates elapsed time from start to finish, average completion time for me is anywhere from 3-6 months. I've got three going right now, one of which might squeeze in before midnight Monday!