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1977年,根据美国总统卡特建议编制的《致总统全球2000年报告》一书,预测到2000年,全世界的人口将大幅度的增长。1975年的世界人口总数为40.9亿,按人口最低年增长率1.5％估算,2000年是59亿。若按较高年增长率2.1％估算,2000年是68亿。若按平均增长率1.8％估算,2000年也将达63.5亿左右。更加令人不安的是,今后世界人口出生率将保持目前的1.8％的增长率,而一些发展中国家有可能达到2.1％。不到35年时间,世界不发达地区的人口数就会翻一番。
In 1977, according to the President’s Global 2000 Report compiled by President Carter, it is predicted that there will be a dramatic increase in the world’s population by the year 2000. The total world population in 1975 was 4.09 billion, estimated at 1.5% of the population’s annual minimum growth rate. In 2000, it was 5.9 billion. Estimated at a 2.1% annual rate of increase, the figure for 2000 is 6.8 billion. Estimated at an average growth rate of 1.8%, it will reach about 6.35 billion yuan in 2000. Even more disturbing is that the world’s population birth rate will maintain the current rate of 1.8% growth in the future, while some developing countries are likely to reach 2.1%. In less than 35 years, the population of underdeveloped areas in the world will double.