The line chart illustrates the New Zealand population growth pattern between 1950 and 2050.
It is clear that the percentage of the age group of both 0-14 and 38-45 witnessed the same trend of increasing, the opposite was true for the figure for the 25-37 and over 65 age group over the period. It is also notable that, the increase of the population 0-14 aged was the most significant.
In 1950 the figure for people 0-14 years old stood at 5% in comparison with over 20% of the 38-45 age group. Over the period of 40 years, the percentage of people aged around 38 and 45 rose dramatically to reach a peak of nearly 50%, which is expected to decrease slightly to just 40% in 2050. In contrast, despite a gradual drop of around 3% during the first 40 years, the figure for 0-14 aged population is predicted to increase sharply to 20% in the last year.
On the other hand, the proportion of people who were in the age between 25 and 37 and over 65 saw a downward trend. Starting at 60% in 1950, the percentage of people age over 65 increased marginally to 70% in 1990. However, in 2050, it is expected to fall substantially to 55% during the last year. Meanwhile, that of 25-37 years old fluctuated around 20% from 1950 to 1990, which is expected to fall to 0% at the end of the period.