Is there any evidence to support a preference for second-career pastors coming disproportionately from IT?

Anecdotally, I know a lot of bi-vocational and second-career pastors who came from IT. At seminary, I saw a lot of them, and 2 of the 4 pastors at my current church have this background. I remember reading [William Willimon](http://www.amazon.com/Pastor-Theology-Practice-Ordained-Ministry/dp/0687045320) who essentially said there were really only three kinds of professionals who had to read texts closely: lawyers, IT folk, and pastors. That has stuck with me, and led me to see a natural flow from IT to the pastorate. My question is - [do I just notice this because of my own IT background](http://en.wikipedia.org/wiki/Confirmation_bias) , or is there any sort of statistical evidence that would bear this out? Where could I find a good data source to see first careers of second-career pastorates in the United States?