17-22 -- 1-3 beers once in a month or so.
22-25 -- every weekend and occasionally on weekdays. Usually a 6 pack and rarely more, no hard stuff.
25-27 -- 12 pack a day, every other day. Hid this from my parents.
27-30 -- started living alone and also work from home. Things really went downhill since that. 18 pack a day plus sharing a 0.75 L of Jack Daniels with my drinking buddy during the weekend.
Needless to say, no social life whatsoever. Put up about 70 extra pounds, already lost 15 of them thanks to sobriety. I'm on day 14 now.