Average posts per week

I'm starting to think of ways to get more out of this blog. The primary focus of this blog is to share what I'm learning and to accomplish that, I use the blog itself as a place to learn. Working on features for the blog is fun, isolated, and pretty much under my control since I have no real users besides myself on it. I want to start measuring how many posts I'm doing per week, as an average to see if this average will go down or up over time.