I can't be arsed to figure out the fabric "out" for my Block Gather blocks, so I'm saying zero. They're made entirely of scraps at least.
Week 12 (ending March 21, 2010)
Used this week: 0 m
Used this year to date: 21.13 m
Added this week: 0 m
Added this year to date: 30.78 m
Net Stash Busted in 2010: (9.65 m)
Speaking of "can't be arsed" I had some math problems and the stash report for weeks 10 and 11 are bunged up (too lazy to use my spreadsheet and look what happens!) and I can't be bothered to go back and fix them. Today's numbers are the correct ones, and the ones I'll be using going forward. *sigh*