[Citrus Dad]

This is an important analysis. A lot of work went into this.

However, the graphics are a bit misleading--it looks like FRC has a net loss in many years when every actually has experienced net growth. So I suggest that you relabel "Growth" as "Net Growth," "Rookie Teams" as "New Teams" (to be understandable to a non-FRC audience), and add the New Teams line to each of the graphics.

Another idea is to show the attrition rate as a negative number and then use some other graphic formats such as Area to show net growth.