The graphs illustrate the changes in population represented by three age groups in Yemen and Italy in the year of 2000 and estimates for 2050.
Overall, the share of the elderly population is expected to increase in both countries, while the proportion of the youngest citizens is projected to have shrunk by the end of the period.
To begin, those aged 0-14 and 15-59 comprised almost an equal percentage of people in Yemen in 2000, at 50.1% and 46.3% respectively. As for the elderly, they accounted for a tiny fraction of 3.6% at the start of the period. It is expected that the share of adults will have prevailed in Yemen by 2050, reaching almost three-fifths of the total population. The proportion of retired citizens is estimated to grow nearly twofold, but the figure for those aged 0-14 is predicted to have declined by approximately 13%.
Turning to Italy, the proportion of children 0-14 years old made up the smallest age group in 2000, at 14.3%, and this is anticipated to fall slightly to 11.5 per cent in 2050. The figure for retired citizens, who made up approximately a quarter of the total population, is expected to have almost doubled from 24.1 to 42.3 by the end of the period. As for the proportion of teenagers and adults, it is projected to have declined by less than a fifth.