The line graph depicts the 
levels
 of Use synonyms
production
 of different fuel sources in the UK from 1981 to 2000. Use synonyms
Overall
, the amount of Linking Words
petroleum
 and natural gas produced has been Use synonyms
incresed
 by the year 2000, Correct your spelling
increased
whereas
 Linking Words
petroleum
 Use synonyms
production
 Use synonyms
levels
 Use synonyms
was
 the highest among the three main fuels over the two decades. Coal Change the verb form
were
prouction
 continued to decrease over the given period and was the least fuel produced in 2000.
In 1981, the UK produced more Correct your spelling
production
petroleum
 than the other resources with an energy level of almost 90 energy Use synonyms
units
, its Use synonyms
production
 continued to surge over the following three years reaching 140 Use synonyms
units
 and remained on the same Use synonyms
levels
 before starting to decline back to 100 Use synonyms
units
 in 1990. Over the following Use synonyms
decade
 Add a comma
decade,
petroleum
 Use synonyms
production
 Use synonyms
levels
 started to rise back to 140 Use synonyms
units
 and almost stayed steady till the end of the given period.
Natural gas was the lowest fuel produced in 1981 Use synonyms
which 
Correct pronoun usage
apply
accounted
 for 40 Wrong verb form
accounting
units
 and remained at the same Use synonyms
levels
 till 1991 Use synonyms
where
 it rocketed to 100 Correct word choice
when
units
 in 2000. As for coal Use synonyms
production
, its energy Use synonyms
levels
 started to decline from 80 Use synonyms
units
 in 1981 to around 30 Use synonyms
units
 in 2000, with some fluctuation during the first decade of the given period.Use synonyms