Your answer:
The provided bar chart illustrates the percentage of the total US population aged 65 and over from 1900 to 2000.
Overall, it is evident that there is a significant upward trend in the proportion of older individuals within the US population over the century, particularly in the age group of 65-74, which saw notable increases.
In the early decades, specifically between 1900 and 1940, the percentage of individuals aged 65-74 demonstrated a steady rise from 2.9% in 1900 to 4.8% in 1940. Simultaneously, the percentage of the age group 75-84 also increased modestly from 1.0% to 2.2%. Conversely, the proportion of those aged 85 and above remained minimal, growing from a mere 0.2% in 1900 to 0.5% in 1940.
The trend continued in the latter half of the century, as the percentage of the population aged 65-74 reached 6.5% by 2000, having hovered around 7.3% in 1980. Similarly, individuals aged 75-84 also experienced growth, stabilizing at 4.4% by both 1990 and 2000. The oldest age group, those aged 85 and over, showed a consistent upward trend, climbing to 1.5% by the end of this period, indicating a gradual increase in longevity.