APY: Sigh…
What’s so complicated? No one said more girls than boys are born every year. More CHILDREN OF BOTH GENDERS are born every subsequent year than the previous year because our population is growing B”H.
It’s YEAR x that doesn’t match up to YEAR y in terms of the number of available singles. Whichever gender belongs to the younger year will bederech hateva have more unmatched members.