The table presents data about the population of New Zealand from 2011 to 2012 by age group.
Overall, 2012 has a higher population growth of all ages compared to 2011, despite having less population growth of under 15 year olds and 15-39 year olds. The bold difference between 2011 and 2012 is that younger population growth is higher in 2012, while 2011 has higher old people, from the age 40-64 and 65+. Thus, the percentage of change increases in the 40-64 and 65+ age group, with a increase in all ages.
In 2011, ages under than 15 witnessed a high population number of 898.160 kids and early teenagers, however the age group decreased in 2012 to 896.364, resulting a -0.2% percentage change. Next, ages 15-39 grew to 1.577.256 individuals, although the year after it the age group experienced a fall down to 1.574.102, hence the percentage change is -0.2%. Furthermore, the 40-64 community was in a fair number in 2011 with 1.331.907 folks, and then it encountered a expansion of 1.339.898 people in 2012, therefore the percentage of change became +0.6%. Finally, elderly people, from the age 65+ rose from the year 2011 to 2012, they were exactly 573.946 and jumped to 596.903, with a +4.0% change. In total, all ages were 4.381.269 in 2011 and increased to 4.410.284, consequently a total percentage change of +0.6%.
In conclusion, the age group of under 15 and ages 15-39 had almost identical data, they both increased in 2011 and decreased in 2012, likewise they had to undergo same percentage change. Additionally, ages 40-64 and 65+ experienced a rise from 2011 to 2012.