Assertion: population | /r/CapableOf | maintain a tfr of 3.8
Facets:
value: over an extended period
type: TEMPORAL
Source sentences:
text: A population that maintained a TFR of 3.8 over an extended period without a correspondingly high death or emigration rate would increase rapidly (doubling period ~ 32 years), whereas a population that maintained a TFR of 2.0 over a long time would decrease, unless it had a large enough immigration.