These diagrams illustrate the data about the estimates and projections of world population from the US Census Bureau from 1950 to 2050
Overall, the world population is predicted to continuously grow, while the world population growth rate will experience a downward trend.
It is apparent from the graph that the population will increase in two stages. Starting at marginally below 3 billions, the population will grow at a slower pace by 1 billion people in 1980. The next stage (1990 to 2050) will experience an exponential surge, reaching its peak at 9 billions in 2050.
In contrast, the world population growth rate will rise and fall remarkably. The rate in 1950 will be 1.5%, before showing a steady decline to 1.3% in 1960. It will witness a recovery in 1970, albeit a short-lived one, and will decline to the 1950 level by 2000. Since 2000, the figure will decrease precipitously, hitting its lowest level at 0.5% in 2050.
