The graph illustrates the percentage of Iceland’s population in five different age cohorts from 1990 to 2020.
Overall, while the 25-54 age group saw a significant increase in its proportion of the population, the reverse was true for the 0-14 and 15-24 age groups. The 65+ and 55-64 age groups both fluctuated with a downward trend. Additionally, those aged 25-54 living in Iceland were constantly the highest population throughout the period.
Looking first at three age brackets consisting of people aged 0-14, 15-24 and 25-54, the proportion of residents in the 25-54 in 1990 was about 32%, after which it witnessed a slight growth to 38% before reaching a peak of nearly 50% in the final year. An opposite trend can be seen in the figure for the youngest, which decreased by 8%, from around 26% to 18% during the period. The population of the 15-24 age group experienced a similar change, but to a great extent, which was 22% followed by a gradual decline of 10% making it the least population among age groups after 30 years.
Turning to the remaining age cohorts, the percentage of 55-64-year-old people living in Iceland started at 13%, then stayed unchanged at approximately 11% between 2000 and 2010 before decreasing to 10% in 2020. This figure for the oldest bracket was at 15% in 2010 after remaining unaltered at 12% in the first ten years, with a small decrease widening the gap with the 55-64 age group in the final year.