Australia's birth rate is expected to plummet to a new record low after years of steady decline. The nation's total fertility rate (TFR) has been below the replacement level of 2.1 children per adult woman for almost 50 years now. READ MORE: Residents in fear after teenagers invited to planned mass bike rideout in SydneyAustralia's fertility rate is expected to fall to a record low this year. We want to know why/ (Getty)In 2023, Australia's fertility rate hit a low of 1.49 , then dipped to a record-breaking low of 1.48 in 2024. The predicted rate for 2025 was about 1.45, according to new data from The Centre for Population.