The diagram illustrates information about demographic changes in four different age groups between 1950 and now with projections for 2050.
Overall, what stands out from the graph is that both 0-14 and 38-45 age groups are expected to increase, while the others (25-37 and over 65 age categories) will experience a gradual decline over the period in question. Another interesting point is that the over 65 age group will stay dominant during the whole period.
Looking at details, as regards the proportion of people aged 38-45 made up 25% in 1950, after which it had reached a sharp 40% by 2000 with a peak of nearly 50% in 1990. After this, it is predicted to have stood unchanged by the end of the period. The trend for the youngest age group (0-14) is similar. Despite leveling off at 5% until 1990, it climbed to 10% in 2000. At this point, the figure is anticipated to keep growing steadily, finishing at 20% in 2050, which is half of the final figure for middle-aged people (38-45).
By contrast, as for the age category over 65 witnessed a slight rise to 70% in 1990, after which, it is predicted to fall till 55% by the end of the timeframe. With respect to the 25-37 age group, it experienced a gradual upward trend, reaching 25% in 1960. Interestingly, it is forecast that the figure then will fall to almost zero at the end of the span.