The data below demonstrates the global percentage rates over a period of 90 years.
Overall, rural populations are tending to diminish and get replaced by urban trends; moreover, the youth and middle-aged rates are fluctuating, while the percentages of the elderly are exponentially increasing.
From the data given, it is clear that the rural trends start from a percentage of roughly 60% and urban ones from 40%, then they converge to the same ratio of 50% in the 60s. Furthermore, the urban trends are increasing and expected to keep surging, while it’s quite the opposite for rural trends, which are diminishing over time.
Moreover, the proportion of citizens less than 15 years old and people between 15 and 65 years old are oscillating between 35% and 45% untill the year 2010 when they are expected to decrease to approximately 25%, and for the proportion of the elderly, it plateaued between 1950 and 1990 at a rate of 20% and then it noticed a dramatic surging which is expected to speed up growing to 45% by the year 2040.