https://www.stlouisfed.org/on-the-economy/2023/oct/what-has-been-driving-world-… Created Thu, 26/10/2023 - 20:30 Updated Thu, 26/10/2023 - 20:30 The world’s population more than doubled from 1960 to 2021 despite the birth rate falling. Declining death rates in lower-income countries drove the growth.