The line graph indicates the quantity of fuel produced in a European country over a period of 10 years starting from 1981.
Overall, it is obvious that the production of natural gas increased, the opposite was true for coal. Besides, the production level of petroleum was the highest over a period.
In 1981, the amount of natural gas was 40 million tonnes and it remained unchanged in following years. Since 1987, the figure started to increase, about 50 million tonnes in 1989 and finished at about 85 million tonnes around 1991. In contrast to natural gas, the amount of coal had a downward trend. The number started at 80 million tonnes in 1981 and it still remained the same until 1983 before dropping to approximately 50 million tonnes. However, the figure went up again to 60 million tonnes around 1987, and then it declined to just under 40 million tonnes at the end of the period.
Regarding the production of petroleum, which was higher than other fuels, it began at 100 million tonnes around 1987. The number continued to rise over the next few years. Since 1985 it suddenly decreased and it was roughly 100 million tonnes in 1987. Afterwards, the number rose up again and stopped at about 120 million tonnes in 1991.
The line graph indicates the quantity of fuel produced in a European country over a period of 10 years starting from 1981.
Overall
, it is obvious that the production of natural gas increased, the opposite was true for coal.
Besides
, the production level of petroleum was the highest over a period.
In 1981, the amount of natural gas was 40
million
tonnes and it remained unchanged in following years. Since 1987, the figure
started
to increase, about 50
million
tonnes in 1989 and finished at about 85
million
tonnes around 1991.
In contrast
to natural gas, the amount of coal had a downward trend. The number
started
at 80
million
tonnes in 1981 and it
still
remained the same until 1983
before
dropping to approximately 50
million
tonnes.
However
, the figure went up again to 60
million
tonnes around 1987, and then it declined to
just
under 40
million
tonnes at the
end
of the period.
Regarding the production of petroleum, which was higher than other fuels, it began at 100
million
tonnes around 1987. The number continued to rise over the
next
few years. Since 1985 it
suddenly
decreased and it was roughly 100
million
tonnes in 1987. Afterwards, the number rose up again and
stopped
at about 120
million
tonnes in 1991.