@p @lanodan @hj @Hoss @ProfessionalPetFoodTaster @gentoobro @mangeurdenuage 80s was when it became more of a problem. That was when the birth control policy came into force. The next 30 years families were mostly limited to one child (minorities exempt) so there were a lot more boys than girls.
The problem has been mostly been handled so far with mail-order brides from Vietnam.