Unfortunately my 1.13 run has gone the way of the dodo, from vague memory I had like 800kt warships and 8 billion pop during my first war beginning, and it (along with the second war that got started along the way) ended at roughly 2Mt ships and 14 billion pops. However, that includes most of the 800kt ships as I didn't lose many (first war was 1v1v1, managed to avoid much of the fighting until my next gen came online), and most of them are VERY outdated (like, magneto-plasma carriers and jump tenders only good for rimworld defense fighters). On the other hand, my growth was restricted due to a severe gallacite shortage limiting the amount of beam ships I could build. (doctrine was beam and missile fighters, more or less).