It seems like it’d get increasingly impractical as the years go on to hundreds of thousands and millions of years to write them out that way, but then…I guess technically one may already do this with the preceding years, so future’s fair game for it?
I don’t know if you read the right wiki, but in the history section the first paragraph is:
It was either that, or earlier, or in the future. That’s the only year that kinda makes sense (solar = lunar = induction = 0). It looks odd but once you know you know, you know?