No spinning this month, and it was Vestvember, so a good chunk taken out of my yarn stash.
The first vest I made was knit at a loose gauge for extra squish and used 1,071 yards of yarn:

http://www.ravelry.com/projects/fak/crimson-trace

http://www.ravelry.com/projects/fak/crimson-trace
The second vest was knit at a slightly tighter gauge and I had to squeak out every inch of the base colour, using up a total of 1,157 yards:

http://www.ravelry.com/projects/fak/crimson-trace-2

http://www.ravelry.com/projects/fak/crimson-trace-2
Total monthly yarn out: 2,228 yards
Total monthly yarn in: 0 yards
Net monthly yarn decrease: 2,228 yards
Monthly fibre stash reduction: 0g.
Total yarn out year-to-date: 20,645 yards
Total yarn in year-to-date: 15,260 yards
Net yarn decrease year-to-date: 5,385 yards
Fibre stash reduction year-to-date: 3,539g.