World Population to Reach 9. Aerial View of a Crossing in Mexico City. Newsletter The SDG Update compiles the news, commentary and upcoming events that are published on the SDG Knowledge Hub each day, delivering information on the implementation of the Agenda for Sustainable Development to your inbox.
Since , 27 countries or areas have experienced a reduction of one per cent or more in the size of their populations. This drop is caused by sustained low levels of fertility. The impact of low fertility on population size is reinforced in some locations by high rates of emigration. Between and , populations are projected to decrease by one per cent or more in 55 countries or areas, of which 26 may see a reduction of at least ten per cent. In China, for example, the population is projected to decrease by Between and , 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.
Some of the largest migratory outflows are driven by the demand for migrant workers Bangladesh, Nepal and the Philippines or by violence, insecurity and armed conflict Myanmar, Syria and Venezuela.
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. The report includes updated population estimates from to the present for countries or areas, based on detailed analyses of all available information about the relevant historical demographic trends.
The latest assessment uses the results of 1, national population censuses conducted between and , as well as information from vital registration systems and from 2, nationally representative sample surveys. The gap in life expectancy at birth between the least developed countries and other developing countries narrowed from 11 years in to 8 years in Although differences in life expectancy across regions and income groups are projected to persist in future years, such differences are expected to diminish significantly by There continue to be large movements of migrants between regions, often from low- and middle-income countries toward high-income countries.
The volume of the net inflow of migrants to high-income countries in 3. Although international migration at or around current levels will be insufficient to compensate fully for the expected loss of population tied to low levels of fertility, especially in the European region, the movement of people between countries can help attenuate some of the adverse consequences of population ageing.
The report observes that the Syrian refugee crisis has had a major impact on levels and patterns of international migration in recent years, affecting several countries. The estimated net outflow from the Syrian Arab Republic was 4. The Revision builds on previous revisions by incorporating additional results from the and rounds of national population censuses as well as findings from recent specialized sample surveys from around the world.
The Revision provides a comprehensive set of demographic data and indicators that can be used to assess population trends at the global, regional and national levels and to calculate other key indicators for monitoring progress toward the Sustainable Development Goals. Welcome to the United Nations. Home News World population projected to reach 9. Last summer, Congress tried but failed to pass a comprehensive reform bill, and the debate over how to change immigration policies has become a major topic of the current presidential campaign.
It is possible that a future Congress will enact laws that would sharply cut immigration flows. This has happened before. The Immigration Act of along with an economic depression and a world war drastically reduced immigrants as a share of the U. This report offers two alternative population projections in addition to its main projection. The projected annual growth rate of 0.
That means the costs per worker to support the young and elderly would go up. Under a lower-immigration scenario, the ratio would rise even higher, to 75 dependents per people of working age. Under a higher-immigration scenario, it would be 69 dependents per working-age people. The projected annual growth rate for the United States will continue to exceed that in most other developed nations, which are growing at a slower pace, if at all.
European countries generally are growing at no more than 0. As is true in the United States, the immigrant populations in many other developed nations have been growing rapidly in recent decades.
The United States has a larger foreign-born population than any other country, but U. Although immigrants are a larger share of the U. This report begins by presenting the baseline projection for the total population from to The next sections go into detail about the projected estimates for key segments of the population, including the foreign born, Hispanics, blacks, Asians, non-Hispanic whites, working-age adults, children and the elderly.
This report then examines how these changes will affect the size of the potential workforce relative to the number of elderly and young people.
A final section presents the results of two alternative projections. This overview concludes with a summary of major projections. These projections assume that definitions of race and ethnic categories will remain fixed and that self-identification does not change over time. This report uses the following definitions of the first, second and third-and-higher generations:.
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