The line graph provides information about the amount of three different fuels produced in a European country between 1981 and 2001. Units are measured in million tonnes.
Overall, having witnessed a wild fluctuation, the outcome of petroleum took the dominance over the period. Meanwhile, the proportion of coal production registered an significant decrease, and the reverse was true for natural gas.
As far as the manufacturing of petroleum is concerned, the produced petroleum stood at 100 million tonnes at the beginning of the period. Although having reached its peak of 130 from 1986 to 1989, it plummeted by 30 million in a third quarter of the period. Following that, it fluctuated by hitting a high level of manufacturing, and stayed at 120 at the end of the period.
When it comes to Coal and Natural gas, they started with the amount of 80 and 40 million tonnes of oil, respectively. However, the volume of Natural gas remained the same till 1989, and surpassed the volume of Coal in the year 1997. Turning into the production of Coal again, despite of being started with a noticeable dominance over the Natural gas in 1981, it underwent a downward trend over the period, and decreased almost by 40 million tonnes.
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