In demographics, the world population is the total number of humans currently living, and was estimated to have reached 7,800,000,000 people as of March 2020.[2][3] It took over 2 million years of human history for the world’s population to reach 1 billion,[4] and only 200 years more to reach 7 billion.[5]
The world population has experienced continuous growth following the Great Famine of 1315–1317 and the end of the Black Death in 1350, when it was near 370 million.[6] The highest global population growth rates, with increases of over 1.8% per year, occurred between 1955 and 1975 – peaking to 2.1% between 1965 and 1970.[7] The growth rate declined to 1.2% between 2010 and 2015 and is projected to decline further in the course of the 21st century.[7] However, the global population is still increasing[8] and is projected to reach about 10 billion in 2050 and more than 11 billion in 2100.[9]
Total annual births were highest in the late 1980s at about 139 million,[10] and as of 2011 were expected to remain essentially constant at a level of 135 million,[11] while deaths numbered 56 million per year and were expected to increase to 80 million per year by 2040.[12] The median age of the world’s population was estimated to be 30.4 years in 2018.[13] In mid-2019, the United Nations estimated that the world population had reached 7,713,000,000.[14]
https://en.wikipedia.org/wiki/World_population
Ericson Report 