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The oldest Baby Boomers, a large demographic cohort, had started to reach retirement age in the 2010s. [ 39 ] By the early 2020s, about one in six Americans are 65 or older. [ 54 ] In 2020, the median age of the United States is 38.8, up from 37.2 in 2010, [ 42 ] 35 in 2000, and 30 in 1980. [ 55 ]
The dependency ratio is the age-population ratio of people who are normally not in the labor force (the dependent population, which includes those aged 0 to 14 and 65 and older) to those who are (the productive part, ages 15 to 64). It is used to gauge the strain on the populace that is productive.
[2] [failed verification] The aged population is currently at its highest level in human history. [3] The UN predicts the rate of population ageing in the 21st century will exceed that of the previous century. [3] The number of people aged 60 years and over has tripled since 1950 and reached 600 million in 2000 and surpassed 700 million in 2006.
According to projections based on the 1982 census, if the one-child policy were maintained to the year 2000, 25% of China's population would be age 65 or older by 2040. In 2050, the number of people over 60 is expected to increase to 430 million. [23]
Percentage of the population over 65 in Europe in 2020 Population pyramid of the European Union in 2023 Europe population pyramid from 1950 to 2023. The ageing of Europe, also known as the greying of Europe, is a demographic phenomenon in Europe characterised by a decrease in fertility, a decrease in mortality rate, and a higher life expectancy among European populations. [1]
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. [7] The world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999.
The population density is just over 25 people per km 2 (65 per square mile), with 1,437 persons per km 2 in localities (continuous settlement with at least 200 inhabitants). [15], [16] 87% of the population live in urban areas, which cover 1.5% of the entire land area. [17] 63% of Swedes are in large urban areas. [17]
More than 40% of the population is expected to be over the age of 65 in 2060. [9] In 2021 the population had for fifteen consecutive years declined by 644,000 on this year, the largest drop on record since 1945 and also reflecting a record low of 831,000 births. As of 2013 more than 20 percent of the population of Japan were aged 65 and over.