Population momentum often tells more about why a population will continue to grow even if the fertility rate reduces. This exception that can be explained by population momentum is from the 1966-1970 age-group.
Population growth is often linked with the age structure of the population.
Research as shown that the higher the percentage of young people, the more the population will continue to rise. Since the 1970s, China's total fertility rate has show to be reducing a lot
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