In my early studies of PA, we noticed that large numbers of people were added to the voter rolls around 1996. Later, in the early 2000's, these 'voters' started voting.
Looks like a similar narrative applies to Ohio, only the 'voters' were added more gradually (still at a much faster rate than the population growth).
Interestingly, Democrats sued in 2004 for election fraud. I can see why... that's when the stuffing started. The sudden 10% jump in ballots cast is similar to the number of phantom voters I predict in most states.
By the way, Ohio had 57% mail-in ballots in November, 2020. Yet the SoS calls it the most secure election in our history.
If you want a secure election, it needs to be one day, in-person, with paper poll books and no one knows anything until the polls close.