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Globally, the rate of population growth has declined from a peak of 2.2% per year in 1963. [9] Population growth alongside increased consumption is a driver of environmental concerns, such as biodiversity loss and climate change, [10] [11] due to overexploitation of natural resources for human development. [12]
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 number shown is the average annual growth rate for the period. Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship—except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of the country of origin ...
This year, international migration accounted for 84% of the population growth between 2023 and 2024, with 2.8 million people moving to the U.S. both legally and illegally.
PGR|first year|first population|second year|second population}} This template quickly calculates the population growth rate given two pairs of years and populations using the formula from Population growth :
Population estimates for world regions based on Maddison (2007), [29] in millions. The row showing total world population includes the average growth rate per year over the period separating each column from the preceding one.
The national 1 July, mid-year population estimates (usually based on past national censuses) supplied in these tables are given in thousands. The retrospective figures use the present-day names and world political division: for example, the table gives data for each of the 15 republics of the former Soviet Union, as if they had already been independent in 1950.
The highest global population growth rates, with increases of over 1.8% per year, occurred between 1955 and 1975, peaking at 2.1% between 1965 and 1970. [3] The growth rate declined to 1.1% between 2015 and 2020 and is projected to decline further in the 21st century. [4]