I'll have to look it up to he sure but I wanna say millenials were the largest population increase for a generation since the boomers. Which would make up the really close to the entire existence of the eealestate market as we know it. Wanna say 1930's the new deal created the foundation of the modern mortgage loan. Either way, the answer is no it does not go up for every generational transition.
It's actually only the second time it has and will go up by the time gen z cycles to home buying in a span longer than 150 years.
I wanna say you were thinking of this in terms of total population growth increasing but it really is more of a combo between birth rate and poulation percent change, except instead of year over year it is 15 year wondow over 15 year window or however long each generational span is.