It is a little early but I did the calculation for my own recording purposes.
Total into my stash this month....18 yards. Some purchases to finish quilts and some donations that are not designated but in color ways I frequently use.
Total out of my stash...9.75 yards. (Two quilts out the door. and a UFO donation.)
Year to Date total of a negative 8.25. (More fabric in than out this month).
Not justifying, but I do have three projects that have used some of the 10.5 yards, but they are not finished and won't be by February 1.
My rule is the quilt must be finished and ready to gift or donate or put on my bed to count in my monthly total.
Watch out February! Here I come! Two baby quilts and one UFO from the Boom Swap group. The choices are plenty if I change my mind. Tee-Hee-Hee!