Reports "By Year" option, in addition to By Month and By Property

I would like the option to run reports by years, particularly the Net Cashflow report. This request is about how data is aggregated, not about the date range. Currently options are “By Month” “By Property” and “Combined”. I would love to be able to compare change over larger chunks of time, at a glance, with a “By Year” option instead of just “By Month”.