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Population pyramid of the United States in 2023. In recent decades, the fertility rate of the United States has declined below replacement level, prompting projections of an aging population and workforce, [1] [2] as is already happening elsewhere in the developed world and some developing countries. [3]
Political map of the Earth as of January 2015. This is a list of sovereign states and other territories by population, with population figures estimated for 2015 (rounded to the nearest 1,000). The figures are estimates for the United Nations (UN) "2015 annual statistics", which lists more than 100,000 population by country and territory.
Population ageing is an increasing median age in a population because of declining fertility rates and rising life expectancy. Most countries have rising life expectancy and an ageing population, trends that emerged first in developed countries but are now seen in virtually all developing countries. In most developed countries, the phenomenon ...
Pan-American countries by population, 2020. This is a list of countries and dependent territories in the Americas by population, which is sorted by the 2015 mid-year normalized demographic projections.
The population is divided into three groups: Ages 0 to 14 years: children. Ages 15 to 64 years: working population or adults. Over the age of 65: elderly, senior citizens. The age structure of a country has a strong impact on society and the economy. If the proportion of 0–14-year-olds is very high, there may be a so-called youth bulge. If ...
The United Nations’ 2019 report on World Population Ageing noted that for the first time in human history, those 65 and older exceeded the number of children 5 and under. This is not a temporary ...
UN estimates (as of 2017) for world population by continent in 2000 and in 2050 (pie chart size to scale) Asia Africa Europe Central/South America North America Oceania. 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 ...
It is the only index associated with the age distribution of a population. [1] Currently, the median age ranges from a low of about 18 or less in most Least Developed countries to 40 or more in most European countries, Canada, Cuba, Hong Kong, Japan, South Korea, Taiwan, and Thailand.