I just realized that I answered incorrectly... the poll is asking for "in the past 5 years" and I didn't pay close enough attention. Luckily I was able to fix my answer.
I received my first ever bottle of Port in August of 2004 but didn't drink it immediately and didn't replace it immediately when it was gone. So even though I originally answered "believe it or not, a full week" my answer should have been (and has been changed to) "other" because if we're going back to January of 2005 I've almost certainly gone at least a month without Port early in that period and probably all summer in 2005. By winter 2005/2006 I was probably drinking a bottle a month, and then probably didn't have any Port again during the summer of 2006, but then probably continued at the one bottle per month rate fairly consistently until the start of 2008 when I signed up for FTLOP. The rest, as they say, is history.
These days I probably average around a bottle a week on my own, but since that's an average there are probably Port-free weeks that slip in here and there. I'm not counting tastings in that because they're irregular and would really skew the average.