The four pie charts depict the information pertaining to the 
populations
 age in Yemen and Italy in 2000 and the prediction Fix the agreement mistake
population
of 
Change preposition
apply
it 
for the Correct pronoun usage
apply
five
 decades.
Correct word choice
next five
Overall
, the population count of Yeman and Italy fell drastically, the former for teenagers and the latter for adults in the following period. 
To be more specific, in 2000, 46.3% of the populace were adults in Yemen and Linking Words
this
 will reach approximately 57% in the year 2050. Linking Words
Moreover
, half of Italy's crowd were teenagers and Linking Words
then
 will Linking Words
be dwindled
 to 37% as predicted. In the initial year, old age people in Italy was only 3.6% which will escalate to 5.7% in 2050. Wrong verb form
dwindle
Linking Words
Furthermore
 the individuals count in 2000, for the Italian adults and older people were 61.6 % and roughly 24% Add a comma
Furthermore,
then
 it Linking Words
estimated
 to be reached at nearly 46% and 42.3% respectively.  Add a missing verb
is estimated
Lastly
, 14.3% of the Italian population was between 0-14 years in 2000.Linking Words