Population growth 1979 - 1988Other periods:1960 - 20182009 - 20181999 - 20081989 - 19981979 - 1988
Population growth worldwide
In the last 2000 years, the population almost continuously increased slowly and steadily. Just 350 years ago, there were only half a billion people on earth. With the "Industrial Revolution", at the end of the 18th century, an unprecedented increase in population began. Numerous technical and chemical developments such as e.g. medicine or fertilizer dropped the death rate drastically. At the same time, there was an improved supply of food for large parts of the population, which also ensured the future of the offspring and thus led to an increased birth rate. Population growth jumped from 0.3% up to 0.8%. In the following 300 years alone, the world population grew from 0.5 to over 3 billion people.
Considering the recent time, the curve flattens off again. The following graph shows the evolution of the world population from 1960 to 2018. The exponential development of the population has subsided and the graph is almost linear. There is only a minimal decline in growth rates.
At the end of 2018, there were 7.59 billion people on earth. The growth rate has been at 1.11 percent.
(Figures in billions of inhabitants)
Population pyramids: different growth by economy
The population does not rise equally in all countries. There is a striking difference when looking at the aggregated age pyramids by countries with different economic strengths. Globally, the age pyramid looks like a hive or bell with a few smaller outliers. This is due to a balanced increase in the younger generations with a birth rate of currently 18.7 ‰ and a high, late mortality. At least in relation to the entire world population.
World Low-income countries High-income countries
In a direct comparison of age pyramids, it becomes clear that poor and rich countries differ massively in their population growth. In rich countries, people are much more likely to reach old age due to a strong social system, above-average health care and financial stability. At the same time, however, pressure to perform, high living costs and the lack of an evolutionary need to reduce birth rates ensure. The majority of the population today is between 30 and 50 years old, while under-20s are noticeably underrepresented. In some countries, in 10 to 20 years, this situation will lead to fewer and fewer people having to pay for the pension system financed by their taxes.
In poor countries, the age pyramid has a pagoda shape, ie a broadened pyramid with disproportionately increasing younger age groups. Through higher and earlier mortality, the older residents remain significantly in the minority. At the same time social systems and financial security of the population are often missing, which can only be obtained from one's own family. Large families with many children also mean greater economic security in the future, leading to an increased birth rate. Family associations play a much more important role in most poorer countries than in rich ones. Most children stay spatially bound for a lifetime and care not only for the financial security, but also for the care in old age.