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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. [5] The world's literacy rate has increased dramatically in the last 40 years, from 66.7% in 1979 to 86.3% today. [13]
The figures serve as an indicator of the quality of healthcare in the respective countries and are influenced by various factors, including the prevalence of diseases such as HIV/AIDS. This article introduces the concept of Healthy life expectancy (HALE), which denotes the average number of years a person is expected to live in "full health ...
Currently, 757 million humans live in the 101 largest cities; [41] these cities are home to 11% of the world's population. [41] By the end of the century, the world population is projected to grow, with estimates ranging from 6.9 billion to 13.1 billion; [41] the percentage of people living in the 101 largest cities is estimated to be 15% to 23 ...
Statistical subregions as defined by the United Nations Statistics Division [1]. This is the list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects.
And one of the largest portions of many people’s cost of living, rent, has also risen over the past year: Zillow’s Observed Rent Index for February found that asking rents have risen 3.5 ...
If the assumption is made that, on average, people live a half year on the year of their death, the complete life expectancy at age would be + /, which is denoted by e̊ x, and is the intuitive definition of life expectancy. By definition, life expectancy is an arithmetic mean. It can also be calculated by integrating the survival curve from 0 ...
Under federal law, the Immigration and Nationality Act of 1965, [41] the number of first-generation immigrants living in the United States has increased, [42] from 9.6 million in 1970 to about 38 million in 2007. [43] Around a million people legally immigrated to the United States per year in the 1990s, up from 250,000 per year in the 1950s. [44]
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