Math is hard

For the 2017 fiscal year, Metro's general obligation bond debt service was either 10.1%, 10.85%, or 11.35% of the budget -- depending on what document you look at.

According to the 2017 Budget Presentation given a year ago, it was 10.85%. See page 17.

According to the 2018 Budget Presentation given a few days ago, it was 11.35%. See page 35.

According to the Council Director's analysis for our meeting two weeks ago, it was 10.1%. See page 2.

It seems like there are different methodologies being used to calculate a single metric. These numbers really aren't too terribly different, but there is a roughly 10% swag factor depending on which of these is correct. I'm working with the various Metro folks involved trying to understand the differences.