The chart above shows the modification on three population groups that happened during 80 years in particular country.
Overall the people whose their age between 20 years and 55 years was the highest population group throughout all the period, although it dropped to the second place in the last years behind +55 years group who increased sharply during the period.
In the year 1960 the group 20-55 was significantly higher than the other groups, and the gap was wide between them, which recorded 55 percent of population, then increased to 70 percent in the year 1980. After that started to decrease steadily which was 50 percent in 2020, and it will be 45 percent in 2040.
The group +55 has different trend, which was the lowest group in the start at 15 percent, but then increased steadily until it reached 35 percent in 2020. This increasing it expected to continue in the future as it shown in the chart which will be 55 percent in the year 2040.
The third group, 0-19 started at 30 percent in the beginning, but then decreased until it was 12 percent in the year 2020 and it will be 11 percent in the end.
