I have solid net worth figures for Jan. 1, 2012 and Jan. 1, 2013. I had to do some financial forensic work to come up with a Jan. 1, 2011 value. I hadn't started posting here by then. The asset side is fairly solid, but the liability side is an estimate.
What I came up with is:

2011 net worth percentage increase = 19.6%
2012 net worth percentage increase = 78.9%

My retirement portfolio is my asset of greatest value. Thus, the performance of those funds greatly influences the change in net worth. 2011 was a crappy investment year, and 2012 was a better year.

And, of course, there is rapid debt payoff. While I was probably paying off debt a bit more aggressively in 2011, in 2012 much more of my payments went
toward principal, rather than interest.

I couldn't help myself. I projected my Jan. 1, 2014 net worth, based on projected decrease in debt plus monthly contributions to retirement, no asset growth. My projected net worth percentage increase for 2013 is about 32%.

I'll come back here in a year, and see how I did.