I also track wears and make stats in August
What I find most useful is average wear per category.
I live in a 3 season climate - winter, transitional season, summer - the 3 wardrobes don't overlap.
Turnover this year was high : 1/3 of my wardrobe, because I went a size up and had to replace nearly all bottoms.
Average wears for jackets&coats, for transitional and winter bottoms, for wool pullovers, for transitional and winter shoes, are good : more than 20 wears/year.
For these categories, size of my wardrobe is good, and I roughly apply a one-in-one-out rule.
Average wear for tops is bad : 6 wears/year.
I started the year with 52 tops : too many. Now I have 36 : better sized.
My instinct when a new season starts is to "refresh" my tops, I have this feeling I've worn all my tops a plenty and I'm tired of them. In fact, they're barely worn!
I understand I need variety in my tops and will allow for that, but I don't need so much "refreshing" done I'll try to buy less tops in the future.
Average wear for summer clothes and shoes is low : less than 10 wears/ year. Summer is short, and I have 2 wardrobes for this short season : one for cold summer, one for warm summer. I really need both, so I'm not sizing down, but the numbers are a good reminder not to overbuy for this season.
Heavy shoes, shoes I instinctively reach for in foul weather, see more wear than refined shoes. Again a useful number to keep in mind when I shop, because I'm more attracted to refined shoes.