Even the "assuming 0% growth" numbers are without citation. We have been in a cycle of negative growth at the major level for years, and even a projection of 0% growth may be optimistic. I could draw you up a very pretty set of graphs and data points based on a 3.28% growth rate YoY. It'd look awesome, because there are all sorts of ways to make "wild-ass guessing" look like a valuable trade skill.

As to your original question, if you are committed to pursuing aviation as a career, I suggest you dispense with the crystal ball routine, and go flying. Whatever opportunities exist for you in the near future, the only guarantee I have is that they will not be predicted by the current models. Learning to thrive on chaos and take advantage of completely unexpected opportunity has been the most important skill I've picked up in my 12 years of pursuing this career.

...y'know, that and, like, landing.