Useful guide to population decline for different fertility rates:
TFR of 1.1 (e.g. Poland, Japan) results in almost 50% decline in 1 generation, 70%+ decline in 2 gens, 80%+ decline in 3 gens.
For more, see this documentary:
Useful guide to population decline for different fertility rates:
TFR of 1.1 (e.g. Poland, Japan) results in almost 50% decline in 1 generation, 70%+ decline in 2 gens, 80%+ decline in 3 gens.
For more, see this documentary: