My writting

the line chart provides an insightful information about the proporttion of citizens in New Zealand between 1950 and 2050
overall, it can be seen that while the numbers of inhabitants aged 0 to 14 and 38 to 45 experienced the increases, the opposite was true for these aged 25 to 37 and over 65.
It is also notable that a number of seniors over 65 always accounted for the highest proportion.
The percentage of 38-to-45-year-old residents was five time as many as the percentage of 0 -to-14-year-olds, accounting for 25% and 5% in 1950.
The number of population who was aged 38 to 45 remarkably increased from 1950 to 1990 and peaked at just under 50% in 1990.
However, it marginally goes down to 39% in the next 60 years
the figure for the young people aged 0 to 14 remained stable at approximately 5% from 1950 to 1960 and it hit a lowest point of 4% after having a moderate fall from 1960 to 1990
in the contrast, it witnesses a substantial upward trend by 15% from 1990 to 2050
with regard to over-65 and 25-to-37 year-olds, the proportion of the elderly was three times as many as that of citizens who were aged 25 to 37, accounting for 60% and 20% respectively
a number of over 65-year-old elderly people steadily grew to 70% from 1950 to 1990 and reached a peak at that time
after that, it gradually decreases to 55% in 2050
besides, the number of citizens adult who were aged 25 to 37 hit a highest point of 25% in 1960 and enormously declines to almostly 0% in 2050