evidence: The UN updates its World Population Prospects every two years. Its latest release was due in 2021 but was delayed due to the COVID-19 pandemic. But, on World Population Day, the long-awaited dataset was released today. [...] With early access to this new UN data, we have also published a new Population and Demography Data Explorer. You can explore this full dataset in detail for any country worldwide. [...] If you switch to the map tab in the interactive chart, you see that most people now live in countries where fertility rates are at – or below – the ‘replacement level.’ This is the level at which populations would stabilize or shrink over the long term. The UN reports that two-thirds of people live in countries with a fertility rate below 2.1 births per woman. In some high-income countries such as South Korea, Japan, Spain, or Italy, it is as low as 1.3 births per woman.