The pie charts illustrate the proportions of residents divided by age categories in two countries, 
Yemen
 and Italy, in 2000 and expectations in 2050.
Use synonyms
Firstly
, in 2000 the Linking Words
number
 of Use synonyms
children
 in Use synonyms
Yemen
 accounted for the half of total population, followed by Use synonyms
adults
 with 46.3%, Use synonyms
however
 in 2050 the main category, Linking Words
accounted
 for 57.3%, will become Wrong verb form
accounting
people
 15-59 years old, Use synonyms
while
 Linking Words
Use synonyms
number
 of Change the article
the number
children
 will decrease to 37%.
Use synonyms
Secondly
, in both Linking Words
Correct your spelling
countries
counteries
 the Add a comma
counteries,
number
 of Use synonyms
people
 Use synonyms
in
 Change preposition
with
age
 Add an article
the age
an age
of 
more than 60 will be doubled during Change preposition
apply
presented
 period, albeit in Add an article
the presented
Yemen
 Use synonyms
this
 category will Linking Words
remains
 the smallest, less than 6%, Change the verb form
remain
while
 in Italy there will be 42.3% of Linking Words
total
 population.
Add an article
the total
Finally
, in Linking Words
Italy
 the proportion of both Add a comma
Italy,
adults
 and Use synonyms
children
 will decrease, from 61.6% to 46.2% and from 14.3% to 11.5% respectively.
Use synonyms
Overall
, in Italy Linking Words
Use synonyms
number
 of Change the article
the number
adults
 and Use synonyms
children
 will reduce and old Use synonyms
people
 will take almost the same share as Use synonyms
adults
. In Use synonyms
Yemen
 Use synonyms
number
 of Use synonyms
children
 will shrink in favour of Use synonyms
adults
 and old Use synonyms
people
.Use synonyms