The given table graph illustrates the proportion shift in New Zealand population in distinct age brackets, over 2 years, starting from 2011.
Overall, it is visible that people from the 15–39 age group made up the majority of the total population, whereas the oldest group witnessed the opposite. However, the changing in percentage in the 65+ index experienced a great growth, in contrast to the others over the period.
Concerning the youngest and the 15-39 groups, which share the same increase of ratio change at -0.2%. Nevertheless, during the period, the number of people in the latter figure was roughly 1,600 million, which was 2-folds higher than that of the former one.
Regarding the remaining patterns, people aging from 40 to 64 who lived in New Zealand, was positioned as the runner-up of the total population, being at approximately 1,300 million over 2 years. Followed by the oldest category, with its number standing around halved its former during the same time frame. It is noticeable that New Zealand saw an alternation in the distribution of residents, as an respective increase of +4% and +0.6% was seen in the number of older and middle-age people.