I missed a lot of days due to bike overhaul, the 2004-5 Buffalo winter (I tend to walk more in wintertime), and scouting out and moving to California last summer. I don't count my days on a bike, so I can't even begin to estimate.
2005 will be remembered for me as a watershed year for getting things done, but I really dropped the ball on loaded touring and bike camping this summer too due to finding work and getting settled in here in Cali - other than the actual truck move out here with my dad and camping the whole way along, I did very little camping. I saw America again from east to west, but not the way I like to do it. A whole week of interstate highways gets really brown, even if you're seeing majestic things outside.