Met this "use it or lose it" self-challenge (eventually) and used the opportunity to give away some yarn as well as to get some sock yarn used up.
2005 & before: 6 pair
2006 : 10 pair, one orphan to be frogged
2007 : 5 pair
2008 : 6 pair
2009 : 1 pair
2010 : 1 pair
2011 : 2 pair
2012 : 2 pair
2013 : 1 pair
SOCK PAIR COUNT: 34