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The table starts counting approximately 10,000 years before present, or around 8,000 BC, during the middle Greenlandian, about 1,700 years after the end of the Younger Dryas and 1,800 years before the 8.2-kiloyear event. From the beginning of the early modern period until the 20th century, world population has been characterized by a rapid growth.
The median age of the world's population is estimated to be 31 years in 2020, [9] and is expected to rise to 37.9 years by 2050. [ 73 ] According to the World Health Organization , the global average life expectancy is 73.3 years as of 2020, with women living an average of 75.9 years and men approximately 70.8 years. [ 74 ]
Based on this, the UN projected that the world population, 8 billion as of 2023, would peak around the year 2086 at about 10.4 billion, and then start a slow decline, assuming a continuing decrease in the global average fertility rate from 2.5 births per woman during the 2015–2020 period to 1.8 by the year 2100 (the medium-variant projection).
The current world population growth is approximately 1.09%. [8] People under 15 years of age made up over a quarter of the world population (25.18%), and people age 65 and over made up nearly ten percent (9.69%) in 2021. [8] The world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999.
[3] [4] Old estimates put the global population at 9 billion by 2037–2046, 14 years after 8 billion, and 10 billion by 2054–2071, 17 years after 9 billion; however these milestones are likely to be reached far sooner.
In the first scenario, where the world is expected to continue to develop economically in a similar way to the last 50 years, researchers estimate the global population could peak at 8.6 in 2050 ...
World population estimates from 1800 to 2100, based on: United Nations projections (in 2010) — "high" (colored red), "medium" (orange), and "low" (green) U.S. Census Bureau (historical estimates) — (colored black). Actual recorded population figures (colored blue). According to the highest estimate, the world population may rise to 16 ...
This means that population growth in this table includes net changes from immigration and emigration. ... Year World 1.17: 0.9: 1.23: 1.19: 1.09 ... The 20 countries ...