not in classical sense, its related to population and some techs may improve it while force pool increases originally.
simple trick, if it was not changed:
BUILD DIVISIONS or even brigades if you need it.
rate of conscripts is behaving asymptotic.

apy: as lower the number of recruits originally is, as more you gain in one turn.

apy:
lower it,
EDIT: lower it by building divisions, brigades or artillery
once it is significantly lowered
you will have faster gain of them. / get more recruits each turn for a couple of turns
in times of war etc even more.
there are also plenty of reforms in different countries like general military service, partially mobilization, Army bill....
use them, build forces, keep them in reserve and just use the effect i described above.