The line graph outlines the manufacturing levels of the main types of fuel in the UK from 1981 to 2000.Units are measured in numbers.
Overall
, the figure for petroleum was the highest over the entire period of time.Linking Words
In contrast
, the figure for natural gas went up, Linking Words
while
the coal proportion went down.
Looking at the details, the proportion of petroleum in 1981 was 90, Linking Words
while
it had increased, reaching 140 in 2000.The change in petroleum did not remain constant.The figure for natural gas slowly went up from 40 in 1981 to 1000 after 19 years in 2000.
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In contrast
, the situation for coal production was very different.Coal manufacturing started with a number of 80 in 1981 and decreased to 40 in 2000.Linking Words
However
, decreases were Linking Words
after
1981 to 40 and almost 30.Verb problem
observed after