The chart illustrate the percentage of the population of people in two specific countries(Yemen and Italy),from 2000 and the expectations for 2050.
In Yemen,the population of young people (which they are between 0 and 14) were approximately 50%.Also,most of the other half included by people from 15 to 59 years old. Just 3.6% of it,refer to old ones(over 60 years old).During this period,It is expected that the population of middle aged (15_59years)and also,old people(over 60 years)have a significant potential to increase and reach approximately 57%and6%.while reducing the percentage of 0 to 14 years group is predictable.
On the other hand,in 200o,we can find out that the population in Italy,belongs to middle aged people (around 61%).The young and old groups,include the rest of it.(sometimes around 24%and14%). In2050 the projection of +60 years old of people uns predicted to experience a huge increase(from nearly 24%to42).Also we can see that the population of middle aged people,is going to face a dramatic plunge.Actually during thus period,there will be a bit of changes in young aged group(from about 14 to 11).
All in all,it us clear that the population of people which they are between 15 and 58 in yemen,is expected to experience a noticeable leap.While in Italy it is on the contrary and we see it is going to drop significantly.