The line chart demonstrates the demographics by distinct age categories in a specific nation in 1960 and a prediction in 2040.
Overall, while the 65+ age group witnessed a steady escalation in population and is still expected to rise by 2040, two other younger cohorts displayed a reverse pattern. Additionally, the number of individuals ranging from 15 to 64 years old was almost always higher than that of other age sections during the period.
Regarding the 15-64 age bracket, more than half of the total population was in this age group in 1960. However, the proportion kept rising and fluctuating at 60% between 1970 and 1990, before constantly dropping to below 50% by 2020. Besides, it is forecasted to continuely decrease and hit a low at roughly 45% at the end of the period.
Concerning the 0-14 one, it started at 30% and remained at one quarter of the entire residents from 1970 to 1980, before witnessing a plunge to approximately 15% at the end of the 20th century. Finally, the graph and projection illustrate that there will be a constant decline in the population in this group and end at aroung 10% in 2040, making it become the least populous age class.
As for the remaining category, there was no change in the total number of citizens in the first two years. Nevertheless, apart from two previous age groups, it witnessed a continual ascent in the following years and also be anticipated to reach its peak at approximately 45% in 2040.