• In wealthier regions, by contrast, children account for 16% of the population. In developed countries as a whole, the number of older people has already surpassed the number of children, and by 2050 the number of older people will be nearly twice the number of children.
• Low-fertility countries now include all of Europe except Iceland plus 19 countries in Asia, 17 in the Americas, two in Africa and one in Oceania.
• The populations of several countries are expected to decline by more than 15% by 2050, including Belarus, Bulgaria, Croatia, Cuba, Georgia, Latvia, Lithuania, Republic of Moldova, Romania, Russia Serbia, and Ukraine.
• Life expectancy at birth for the world as a whole rose from 47 years in 1950-55 to 69 years in 2005-2010 and is projected to reach 76 years in 2045-2050 and 82 years in 2095-2100.
据美联社报道,联合国6月13日最新报告预计,世界人口到2025年将从72亿增长至81亿,到2050年世界人口将达96亿。
印度将为第一人口大国
联合国《世界人口展望》报告称,印度人口有望在2028年左右赶超中国,届时两国人口均在14.5亿左右。报告还预测,印度人口增长到16亿后开始逐渐减少,2100年降至15亿;中国在2030年后人口开始减少,2100年可能降至11亿。
报告发现,虽然全球生育率下降迅速,但依然无法阻止今后十年人口的大幅增加。事实上,联合国已经修订了两年前的人口预测报告。此前,联合国预计的2050年世界人口是93亿。
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