Just a suggestion
Sizemeister has done a terrific job of setting up a storage depot of size stat information. It started out as some kind of experiment and I admit I don’t even know what the experiment was about, but the upshot is a place where you can post your stats beginning and current and continuing instead of writing them on little pieces of envelope and then losing them. Plus, his pages keep you honest. Size: excellent work. And it gets more sophisticated all the time, as he has time to tweak it.
Scroll down to the very bottom of this page and you will find the way in. It calculates input very accurately, imo, and will probably keep getting better. Newbies, sign up. Great way to track your progress and to help us all learn more tips about this interesting hobby of ours.