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The population didn't double over the first 60 years unless your 100 newborns were created ex nihilo.
by russdill 4y ago
The population didn't double over the first 60 years unless your 100 newborns were created ex nihilo.
- mcv 4y agoTrue, but if Korea used to have a birth rate over over 5, those 100 newborns could have been born from 40 twenties.
- somenameforme 4y agoAs recently as 1960 [1] their fertility rate was above 6. The neat thing too is that we can actually fill out the missing data perfectly due to the fact that the relative population sizes will always be driven entirely by fertility rates. A fertility rate of six means each older group will be exactly 1/3rd as large as each younger group, similar to how a fertility rate of 1 means each older group will be exactly twice as large as the younger group. So here is what the table looks like if we assume that Year 0 was the final year of 6 fertility: (148) Year 0: 4 sixties, 11 forties, 33 twenties, 100 newborns, (194) Year 20: 11 sixties, 33 forties, 100 twenties, 50 newborns (208) Year 40: 33 sixties, 100 forties, 50 twenties, 25 newborns (187) Year 60: 100 sixties, 50 forties, 25 twenties, 12 newborns (93) Year 80: 50 sixties, 25 forties, 12 twenties, 6 newborns (46) Year 100: 25 sixties, 12 forties, 6 twenties, 3 newborns (23) Year 120: 12 sixties, 6 forties, 3 twenties, 1 newborn [1] - https://fred.stlouisfed.org/series/SPDYNTFRTINKOR https://fred.stlouisfed.org/series/SPDYNTFRTINKOR