I don’t know. But it’s very safe to assume that is was considerably smaller than it is today, by the simple observation (among other things) that they typical family had far few children than they do today.
Which is the explanation as to why the girls 30 years ago didn’t face the same numbers imbalance that they do today.
Perhaps there are people who have access to accurate data on the birth rate of 30 years ago, i haven’t seen any hard data but it is very possible that there are people who have seen it.
I’ve yet to come across anyone who doesn’t recognize the self obvious truism that our communities per year rate growth is far greater now than it was then.
I hope with all your groise kashas sufficiently answered, we can retire this circular discussion.