The bar chart illustrates the proportion of Iceland’s population across different age groups (0-14, 15-24, 25-54, 55-64, and 65+) in 1990, 2000, 2010, and 2020.
Overall, an upward trend was noted in the 65+ and 25-54 age groups, with the latter not only exhibiting the most substantial growth but also remaining the largest group over the period, whereas the remaining groups declined to various degrees, either moderate or significant.
Regarding the age groups with increases, initially, the proportion of people aged 25-54 remained just over 30%, after which it rose gradually and finally peaked at nearly half of the total population. Meanwhile, the proportion of the 65+ group increased from nearly 13% to 14%, before returning to its initial level by the end.
Concerning the remaining age groups, a decline of approximately 2 percentage points from 14% in 1990 to 12% in 2000 was observed, which then increased slightly in 2010, a change deemed negligible, before experiencing a modest decrease to 10% by 2020. In contrast, the youngest age cohort remained relatively stable in the first decade (around 25%) before gradually declining to 19% in 2020. Similar trends, yet to a lesser extent, were shown in the 15-24 age group, whose population registered a substantial fall from 21% in 1990 to 8% in the final year, resulting in it becoming the smallest cohort by the end of the period.