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يكشنبه ، 22 بهمن 1396 ، 07:38

World Population Prospects: The 2017 Revision

United Nations Population DivisionWorld Population Prospects

People and therefore populations are at the centre of sustainable development and will be influential in the realization of the 2030 Agenda for Sustainable Development. ٌWorld Population Prospects: The 2017 Revision released recently. The 2017 Revision provides a comprehensive set of demographic data and indicators to assess population trends at the global, regional and national levels and to calculate many other key indicators commonly used by the United Nations system. According to the results of the 2017 Revision, the world’s population numbered nearly 7.6 billion as of mid-2017, implying that the world has added approximately one billion inhabitants over the last twelve years. Sixty per cent of the world’s people live in Asia (4.5 billion), 17 per cent in Africa (1.3 billion), 10 per cent in Europe (742 million), 9 per cent in Latin America and the Caribbean (646 million), and the remaining 6 per cent in Northern America (361 million) and Oceania (41 million). China (1.4 billion) and India (1.3 billion) remain the two most populous countries of the world, comprising 19 and 18 per cent of the global total, respectively.

At the global level, children under 15 years of age represent roughly one quarter of the world’s inhabitants (26 per cent), while older persons aged 60 or over account for just over one eighth (13 per cent). More than half (61 per cent) are adults between 15 and 59 years of age. If the total number of people were split in half according to the age distribution of the world’s population (at the median age), one group would bring together all persons younger than 30 years of age, while the other would include everyone aged 30 years or older. Today, the world’s population continues to grow, albeit more slowly than in the recent past. Ten years ago, the global population was growing by 1.24 per cent per year. Today, it is growing by 1.10 percent per year, yielding an additional 83 million people annually. The world’s population is projected to increase by slightly more than one billion people over the next 13 years, reaching 8.6 billion in 2030, and to increase further to 9.8 billion in 2050 and 11.2 billion by 2100. There is inherent uncertainty in population projections, which depends on assumptions about plausible future trends in specific demographic variables. The results presented above for future years are based on the medium-variant projection of the 2017 revision, which assumes a decline of fertility for countries where large families are still prevalent, as well as a slight increase of fertility in several countries where women have fewer than two live births on average over a life time. Survival rates are projected to increase in all countries as death rates continue to decline throughout the age range.

Source: UNPD (2017) World Population Prospects: 2017 Revision. Click here for more information.

آخرین بروز رسانی مطلب در يكشنبه ، 22 بهمن 1396 ، 08:11
 

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