In Japan this ratio is 1.8, the lowest in the world. Population. An additional 29 countries, mostly in Europe and the Caribbean, already have potential support ratios below three.
Population data from all sources are evaluated for completeness, accuracy and consistency, and adjusted as necessary. To benefit from this “demographic dividend”, governments should invest in education and health, especially for young people, and create conditions conducive to sustained economic growth. In China, for example, the population is projected to decrease by 31.4 million, or around 2.2 per cent, between 2019 and 2050. This drop is caused by sustained low levels of fertility. (A fertility level of 2.1 births per woman is needed to ensure replacement of generations and avoid population decline over the long run in the absence of immigration. “These data constitute a critical piece of the evidence base needed for monitoring global progress toward achievement of the Sustainable Development Goals by 2030”, says John Wilmoth, Director of the Population Division of the United Nations Department of Economic and Social Affairs. Disclaimer: This web site contains data tables, figures, maps, analyses and technical notes from the current revision of the World Population Prospects. “Many of the fastest growing populations are in the poorest countries, where population growth brings additional challenges in the effort to eradicate poverty, achieve greater equality, combat hunger and malnutrition and strengthen the coverage and quality of health and education systems to ensure that no one is left behind.”, Growth of the working-age population is creating opportunities for economic growth. Popular statistical tables, country (area) and regional profiles . The world’s population continues to increase, but growth rates vary greatly across regions. Belarus, Estonia, Germany, Hungary, Italy, Japan, the Russian Federation, Serbia and Ukraine will experience a net inflow of migrants over the decade, helping to offset population losses caused by an excess of deaths over births. In 2019, life expectancy at birth in the least developed countries lags 7.4 years behind the global average, due largely to persistently high levels of child and maternal mortality, as well as violence, conflict and the continuing impact of the HIV epidemic. In projecting future levels of fertility and mortality, probabilistic methods were used to reflect the uncertainty of the projections based on the historical variability of changes in each variable. Methodology of the United Nations Population Estimates and Projections, Department of Economic and Social Affairs, adult HIV prevalence and coverage of antiretroviral treatment, international migration flows and stocks of foreign-born persons, Developing Countries Mortality Database–DCMD. The medium-variant projection corresponds to the median of several thousand distinct trajectories of each demographic component derived using the probabilistic model of the variability in changes over time. The report includes updated population estimates from 1950 to the present for 235 countries or areas, based on detailed analyses of all available information about the relevant historical demographic trends. Disclaimer: This web site contains data tables, figures, maps, analyses and technical notes from the current revision of the World Population Prospects. The world’s population is growing older, with the age group of 65 and over growing the fastest. The resulting changes in the size, composition and distribution of the world’s population have important consequences for achieving the Sustainable Development Goals (SDGs), the globally agreed targets for improving economic prosperity and social well-being while protecting the environment. * Including the Human Mortality Database and Human Life Table Database (UC Berkeley, MPIDR and INED), the Human Fertility Database and Human Fertility Collection (MPIDR and VID), the Latin American Mortality Database–LAMBdA (University of Wisconsin-Madison), the International Data Base (U.S. Census Bureau), the Global Burden of Disease project (IHME, University of Washington) and the Developing Countries Mortality Database–DCMD (Zhejiang University).
By 2050, one in four persons living in Europe and Northern America could be aged 65 or over. World Population Prospects 2019 These documents do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The estimates are based on all available sources of data on population size and levels of fertility, mortality and international migration for 235 distinct countries or areas comprising the total population of the world. Department of Economic and Social Affairs. For further details, see also the report World Population Prospects 2019: Methodology of the United Nations Population Estimates and Projections. Between 2010 and 2020, fourteen countries or areas will see a net inflow of more than one million migrants, while ten countries will see a net outflow of similar magnitude.
The main results are presented in a series of Excel files displaying key demographic indicators for each UN development group, World Bank income group, geographic region, Sustainable Development Goals (SDGs) region, subregion and country or area for selected periods or dates within 1950-2100. The number of persons aged 80 years or over is projected to triple, from 143 million in 2019 to 426 million in 2050. While considerable progress has been made in closing the longevity differential between countries, large gaps remain. The 2019 revision also presents population projections from the present until 2100, depicting a range of possible or plausible outcomes at the global, regional and country levels. The World Population Prospects 2019: Highlights, which is published by the Population Division of the UN Department of Economic and Social Affairs, provides a comprehensive overview of global demographic patterns and prospects. Because population data are not necessarily available for that date, the 2020 estimate is derived from the most recent population data available for each country, obtained usually from a population census or a population register, projected to 2020 using all available data on fertility, mortality and international migration trends between the reference date of the population data available and 1 July 2020. By 2050, 48 countries, mostly in Europe, Northern America, and Eastern and South-Eastern Asia, are expected to have potential support ratios below two. In cases where data on the components of population change relative to the past 5 or 10 years are not available, estimated demographic trends are projections based on the most recent available data. Regions where the share of the population aged 65 years or over is projected to double between 2019 and 2050 include Northern Africa and Western Asia, Central and Southern Asia, Eastern and South-Eastern Asia, and Latin America and the Caribbean.
The cohort-component method was also used to project population trends until 2100 using a variety of demographic assumptions concerning the components of population change. ), Mr. Liu Zhenmin, United Nations Under-Secretary-General for Economic and Social Affairs, said the report offers a roadmap indicating where to target action and interventions.
In 2019, fertility remains above 2.1 births per woman, on average, over a lifetime in sub-Saharan Africa (4.6), Oceania excluding Australia/New Zealand (3.4), Northern Africa and Western Asia (2.9), and Central and Southern Asia (2.4).
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