You are doing great, Leonard, and I am writing here for the same reasons. I actually joined Medium a few years ago but was never active, so I didn’t realise what a wonderful community it had. I am now finding myself spending more time here than at HubPages (the ad overkill there and no commenting is the main reason) and am trying to write or publish at least one item per day.
My growth is steadily improving but nowhere near your stats, at least I have a good read per view ratio. Interacting as much as possible is important. Hopefully this year is a successful one for everyone here. Happy New Year.