The line chart illustrates the amount of major fuels produced – petroleum, coal, natural gas, in one country in Europe over a period of nineteen years starting from 1981.
At the first glance, it is clear that the amount of petroleum and natural gas experienced an upward trend, while the opposite was true for that of coal. In addition, the highest feature was recored in the quantity of petroleum and the most extensive change was seen in that of natural gas and coal over the given period.
Starting at the highest point, about 95 tonnes, the level of petroleum increased considerably to about 130 tonnes in 1983, then it remained constant until 1987 before experiencing a rapid decrease of 40 tonnes and reaching the low of 90 in 1991. However, there was a tremendous growth in the next 6 years and it two times hit the peak of 135 tonnes in 1995 and 1997 despite witnessing a marginal decline in 1996. It later decreased and stood at 120 in the last year. In contrast, the level of natural gas started as the lowest point, nearly two times less than that of petroleum. Since then, it had maintained the same level over the first thirteen years before slightly growing to 50 tonnes and overtaken that of coal in 1997. Atfter which, it climbed rapidly and leveled off at about 85 in 2000.
Standing at the second point, 80 tonnes, in the first year, the amount of coal had a period of stability until 1984, it then seen a sharp plunge to 50 in the next year. Despite there was a recovery of 20 tonnes over two years, it was still in a gradual downward trend to approximately 40 tonnes in 2000.