The given line graph provides information about the proportion of the population who lived in New Zealand between 1950 and 2050, classified into age groups, such as 0-14, 25-37, 38-45, and over 65.
Overall, it is readily apparent that the category of over 65 recorded the highest figure, while the category of between 25 and 37 had the lowest. Additionally, the age groups of 0-14, and 38-45 showed an upward trend, whereas 25-37, and over 65 declined significantly over a 100 year period.
The over 65 age group started at approximately 61% in 1950, then experienced a gradual increase over 40 years before reaching a peak of 70% in 1990. But then, it decreased slightly before predicting to reach roughly 55% by 2050. By contrast, the 25-37 age group stood at 20% in 1950, then will experience a dramatic decrease before declining to about 1% in 2050.
In terms of the 0-14 age group, it remained unchanged from 1950 to 1990 at around 5%. But then, rose considerably over 60 years and is forecast to reach 20% by 2050. Turning to the 38-45 age group, it started at roughly 25% in 1950, then experienced a significant increase before reaching approximately 50% in 1990. It will predicted to decrease moderately and stand at 40% until 2050.
