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The image presents a line graph measuring Petroleum, Coal, and Natural Gas in tonnes from 1981 to 2000. Petroleum data points are: 1981(~97), 1982(~110), 1983(~125), 1984(130), 1985(130), 1986(130), 1987(~110), 1988(~97), 1989(~98), 1990(~96), 1991(~92), 1992(~105), 1993(~120), 1994(~128), 1995(~132), 1996(~134), 1997(~128), 1998(~132), 1999(~128), 2000(~121). Coal data points are: 1981(80), 1982(80), 1983(80), 1984(80), 1985(~48), 1986(~65), 1987(~72), 1988(~71), 1989(~68), 1990(~66), 1991(~60), 1992(~58), 1993(~56), 1994(~54), 1995(50), 1996(~49), 1997(~48), 1998(~42), 1999(40), 2000(~38). Natural Gas data points are: 1981(40), 1982(40), 1983(40), 1984(40), 1985(40), 1986(40), 1987(40), 1988(40), 1989(40), 1990(40), 1991(~42), 1992(~41), 1993(~42), 1994(~41), 1995(~44), 1996(~48), 1997(~58), 1998(~68), 1999(~75), 2000(~82).
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The line graph delinates various source of contribution which occured in a european country from 1981 to 2000.
The highest Production level had seen on Petroleum as well as natural gas which took place between 1981 to 2000. However, sudden drop and gradual decrease towards coal is noticable by the year 2000.
Petroleum and natural gas had accounted the maximum about 130 and around 82 tonnes respectively. Petroleum saw numorious flactuation over the years ,whereas, natural gas played almost equal measure untill 1994, moreover, rose sharply from 1997 to 2000.
By the year 1980, Usage of coal had a high portion of production which measured around 80 tonnes and it remained stable till 1984 and experienced an immidiate fall into the following year. Coal industry tried to recover their production in the next 2 years but failed and showed gradual decrease with some ups and downs during the year 1991 .
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