Add a historical month-by-month Spending Plan Report (edited)

I'm a heavy user of the Spending Plan and I often find myself flipping back through the Spending Plan page month by month to see how I have been doing over time.

It would be helpful if there were a report that showed the Spending Plan results for the last "X" completed months in columns side-by-side.

A simple version of the report would show the six main numbers along with an average, like this:

An expanded version of the report could show more detail, like this:

It would be great to see this historical information organized in the same way as the Spending Plan so that — for those of us who focus heavily on the Spending Plan — it is easier to evaluate how we are doing.