the percentage of New Zealand population 1950 - 2050
The given graph illustrates the proportion of four different age groups in the total population of New Zealand in 1950,1990,2000 and the estimation of 2050.
Overall, there is a decline in the percentage of people from 25 to 37 while the opposite trend was seen in others. In addition, the people of age over 65 consistently have the largest figures throughout the period, even though a considerable decrease was seen in the latter of the period.
In 1950, the percentage of senior citizens started at 60%, after which it saw a gradual rise to reach its peak at 70% in 1990, before declining to about 63% 10 years later. Similar changes, but to a lesser extent, were seen in the figure for people from 38 to 45, which grew from roughly 25% to almost 50% then decreased to precisely 40% in 2000. 5% of infants and teenagers lived in New Zealand in the first 40 years, with a significant increase to 10% in 2000. Meanwhile, opposite changes can be seen in the figure for people from 25 to 37, which decreased steadily from over 20% to exactly 10% in 2000.
By 2050, the population of people aged over 65 and from 25 to 37 is expected to drop at the same rate, reaching 55% and 0% respectively. By contrast, the figures for the young will increase by 10 percent whereas the middle-aged is predicted to maintain stable at 40%.