1-30-22, 10:08 PM
As @Demonik1 suggested, I extracted the top posters from the last day of each month starting with June 2015 and ending in April 2020. Those are the date ranges that I was retaining daily backups which made this possible. (Backups are still daily, just not retained forever anymore). I also threw in today's numbers at the very end. Not much has changed from 2020 to now though lol. The below video shows the top 15 posters over time.