Not to be too nitpicky, but what's your definition here?
At the moment, I look at dollars used to increase net worth, which includes the principal portion of debt paydown, less any cash I siphon off my investments to pay expenses. So every month, we pay 1000 in mortgage principal, 550 in car loan principal, maybe 125 in student loan proncipal. We also toss in 1200 into the 401k. Every year we fund Roths at 6000 and I get an employer dump-in to the 401k of about 6000. So gross is 46500. Depending on how my wife's side business goes this year, we may have some extra cash to start contributing to a solo 401k, which will be funded with the max allowed. Offsetting this is the fact that I siphon off a few bucks from my after tax account every so often because cash flow doesn't quite keep up with payouts from time to time, mostly because of the debt payments. I'd guess I probably tap 8 to 10 grand a year for this. Net is probably about 36000 a year, pluys whatever we toss into the solo 401k.