The line graph illustrates the amount of oil devoted to the production of major three different fuels – petroleum, coal, and natural gas – in a European country between 1981 and 2000.
Overall, allocation of oil increased in petroleum and natural gas over the period, while that of coal experienced a significant decrease. The production level of petroleum exhibited relatively higher figures, whereas reverse true for natural gas at starting period.
In 1981, 100 million and 40 million tonnes of oil was devoted to petroleum and natural gas, respectively. In natural gas production, this figure remained unchanged until 1995, after which there was a noticeable rise to around 82 million tonnes of oil over the final five years. As for petroleum, the amount of oil rose significantly to about 130 million tonnes, before remaining stable until 1990. Despite a marked drop, the figure recovered to around 130 million tonnes in 1997, prior to declining to 120 million tonnes in 2000.
By contrast, the coal production showed a downward trend. The oil alloceted for coal leveled off at 80 million tonnes initial five years, before droping sharply to roughly 50 million tonnes in 1990. Despite rising to 60 million tonnes in 1995, the production level decreased gradually to nearly 42 million tonnes throughout the remaining period.