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  1. 1

    The 5 billion baby.

    PEOPLE. 1987; 14(2):25.

    At some time during 1987 the 5 billionth person will be born according to the UN Population Division. If the UN media variant projections are accurate, the world will pass the 5 billion mark between April and July 1987. The world's population is expected to total 6 billion in 1999, 7 billion in 2010, and 8 billion in 2022. At the time the population reaches 5 billion, the annual global rate of population growth is estimated to be 1.63%. According to the medium-variant projections, the growth rate will drop to about 1.4% by 2000 and to less than 1% by 2025. Despite the relatively recent decline in the growth rate of the world, the annual increment to the total population continues to increase. Half of the world's 5 billion people in 1987 will be under age 24 and close to 1/3 will be children under age 15. 1 billion persons will be in the 15-24 age group; about 1 of 10 will be age 60 or older. 1 of 25 persons will be 70 years or older. By the middle of 1987, 42% of the world's population, or 2.1 billion people, will reside in urban areas, and it is anticipated that more than half of the world's 7 million people will live in towns and cities by 2010.
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  2. 2

    Global estimates and projections of population by sex and age: the 1984 assessment.

    United Nations. Department of International Economic and Social Affairs

    New York, New York, United Nations, 1987. ix, 385 p. (ST/ESA/SER.R/70.)

    The report presents the estimated and projected sex and age distributions according to the medium, high, and low variants for population growth for 1950-2025 for countries and areas generally with a population of 300,000 and over in 1980. The data for smaller countries or areas are included in the regional population totals and are not given separately. This report supplements the report on the WORLD POPULATION PROSPECTS: ESTIMATES AND PROJECTIONS AS ASSESSED IN 1984, which presents methods, data, assumptions, and a summary of major findings of the estimates and projections, as well as selected demographic indicators for every country or area of the world. The sex and age distributions of population in this report are based on the 10th round of the global demographic assessments undertaken by the UN Secretariat. They are derived from data that were available to the UN generally by the beginning of 1985; therefore, the figures presented supercede those that were previously published by the UN.
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  3. 3

    Prospects of population growth and changes in sex-age structures in Asian countries.

    Otomo A; Obayashi S

    In: Population prospects in developing countries: structure and dynamics, edited by Atsushi Otomo, Haruo Sagaza, and Yasuko Hayase. Tokyo, Japan, Institute of Developing Economies, 1985. 1-15, 325. (I.D.E. Statistical Data Series No. 46)

    This discussion covers the prospects of population growth in Asian countries, prospects of changes in sex-age structures in Asian countries, and the effect of urbanization on national population growth in developing countries. According to the UN estimates assessed in 1980, size of total population of Asian countries recorded 2580 million in 1980, which accounted for 58.2% of total population of the world. As it had shown 1390 million, accounting for 55.1% of the world population in 1950, it grew at a higher annual increase rate of 2.08% than that of 1.90% for the world average during the 30 years. On the basis of the UN population projections assessed in 1980 (medium variant), the world population attains 6121 million by 2000, and Asian population records 3555 million, which is 58.0% of the total population of the world and which is a slightly smaller share than in 1980. The population of East Asia shows 1475 million and that of South Asia 2077 million. During 20 years after 1980, the population growth becomes much faster in South Asia than in East Asia. After 1980 the population growth rate in Asia as well as on the world average shows a declining trend. In Asia it indicates 1.72% for 1980-90 and 1.50% for 1990-2000, whereas on the world average it shows 1.76% and 1.49%, respectively. The population density for Asia showing 94 persons per square kilometer, slightly lower than that of Europe (99 persons) as of 1980, records 129 persons per square kilometer and exceeds that of Europe (105 persons) in 2000. According to the UN estimates assessed in 1980, the sex ratio for the world average indicates 100.7 males/100 females as of 1980, and it shows 104.1 for Asia. This is higher than that for the average of developing countries (103.2). In the year 2000 it is observed generally in the UN projections that the countries with a sex ratio of 100 and over as of 1980 show a decrease but those with the ratio smaller than 100 record an increase. Almost all Asian countries are projected to indicate a decrease in the proportion of population aged 0-14 against the increases in that aged 15-64 and in that aged 65 and older between 1980-2000. In 1980 the proportion of population aged 0-14 showed more than 40.0% in most of the Asian countries. In the year 2000 almost all the countries in East Asia and Eastern South Asia indicate larger than 60.0% in the proportion of adult population. Urbanization brings about the effects of reducing the speed of increase in a national population and of causing significant changes in sex and age structures of the national population. Considering the future acceleration of urbanization in Asian countries, the prospects of growth and changes in sex and age structures of populations in Asian countries may need to be revised from the standpoint of subnational population changes.
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