2018 how many people are on earth

By midcentury, projections indicate that 16 percent of the world population will be ages 65 and older, up from 9 percent now. For example, many countries in the world are experiencing—and will continue to experience—steady increases in the number of older adults, both in absolute terms and as a percentage of the total population.

This trend poses challenges for countries in balancing the pension, health, and other benefits that older adults typically receive with investments in the well-being of younger generations.

In addition, some countries may choose to incentivize older adults to remain in the work force longer. As part of the analyses for this Data Sheet, PRB demographers grouped countries into five age dependency categories to better illustrate their demographic challenges and opportunities. The categories were based on two factors: the child dependency ratio—the ratio of children those under age 15 to the working-age population ages 15 to 64 ; and the old-age dependency ratio—the ratio of older adults ages 65 and older to the working-age population.

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Countries in Europe, like Latvia and Lithuania have experienced a population decline of 1. In Europe, the majority of the population was previously working-aged adults with few dependents, but this trend is expected to reverse soon and it is predicted that by , the older population will outnumber the young in many developed countries.

In , there were about 2. Loading statistic Show source. Download for free You need to log in to download this statistic Register for free Already a member? Log in. Show detailed source information? Register for free Already a member? More information.

Supplementary notes. Other statistics on the topic. Demographics Distribution of the global population by continent Demographics Median age in the Middle East , by country. Demographics Distribution of the global population by wealth range in Profit from additional features with an Employee Account. Please create an employee account to be able to mark statistics as favorites. Then you can access your favorite statistics via the star in the header.

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Together, these data shine a light on the health and rights of people around the world, especially women and young people. The boundaries and names shown and the designations used on this map do not imply official endorsement or acceptance by the United Nations. Membership in Sande society is a proxy for female genital mutilation. For statistical purposes, the data for China do not include this area.

SDG indicator 3. Contraceptive prevalence rate, modern method: Percentage of women aged 15 to 49 who are currently using any modern method of contraception. Unmet need for family planning: Percentage of women aged 15 to 49 who want to stop or delay childbearing but are not using a method of contraception.

Proportion of demand satisfied with modern methods: Percentage of total demand for family planning among women aged 15 to 49 that is satisfied by the use of modern contraception. SDG indicator 5. As this report went to press, updated data for this SDG indicator became available. Total net enrolment rate, primary education: Total number of students of the official age group for primary education who are enrolled in any level of education, expressed as a percentage of the corresponding population.

Gender parity index, total net enrolment rate, primary education: Ratio of female to male values of total net enrolment rate for primary education.

Total net enrolment rate, lower secondary education: Total number of students of the official age group for lower secondary education who are enrolled in any level of education, expressed as a percentage of the corresponding population. Gender parity index, total net enrolment rate, lower secondary education: Ratio of female to male values of total net enrolment rate for lower secondary education.

Toal net enrolment rate, upper secondary education: Total number of students of the official age group for upper secondary education who are enrolled in any level of education, expressed as a percentage of the corresponding population.

Gender parity index, total net enrolment rate, upper secondary education: Ratio of female to male values of total net enrolment rate for upper secondary education. Total population: Estimated size of national populations at mid-year.

Average annual rate of population change: Average exponential rate of growth of the population over a given period, based on a medium variant projection. Population aged , percent: Proportion of the population between age 0 and age Population aged , percent: Proportion of the population between age 10 and age Population aged , percent: Proportion of the population between age 15 and age Population aged 65 and older, percent: Proportion of the population aged 65 and older.

Total fertility rate: Number of children who would be born per woman if she lived to the end of her childbearing years and bore children at each age in accordance with prevailing age-specific fertility rates. Life expectancy at birth: Number of years newborn children would live if subject to the mortality risks prevailing for the cross section of population at the time of their birth.

Contraceptive prevalence rate: United Nations Population Division.