Do not forget to factor in Infanticide: China started their one-child policy in 1977. The only way for the family name to be carried on was to have a son. Results girls were routinely terminated before or after birth. India had a different problem, Boy baby one cloth, Girl baby two cloth. It was much cheaper to raise a boy, plus girls required a dowry for marriage, approximately $35,000 US. It got so bad finding babies left out to die the government put in drop-off stations where parents could leave the girl baby for pick up instead of leaving them out to die. It will need a good researcher to determine the total number.
