Band 6+: The diagram below gives information about the manufacture of frozen fish pies. Summarize the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The line graph illustrates the production of the main fuels between 1981 and 2000 in the UK.

Looking from an overall perspective, it is readily apparent that the figure for production levels of petroleum was consistently the highest over the period, while natural gas production levels went from the lowest to the second highest, demonstrating the highest growth. The figure for coal production levels declined considerably and was overtaken by natural gas.

In 1981, production levels of petroleum were 90 which was the highest in that year, followed by coal production, which had a production level of 80. Meanwhile, natural gas had a much lower figure, at only around 38. After a sharp increase to 138 in 1984, production levels of petroleum remained unchanged for the next 3 years. By 1991, it had declined significantly, down to 100. Similarly, the figure for coal production dropped to 37 in 1984, even lower than the figure for natural gas. For the next 2 years, it managed to rise to 60, before remaining stable for another 3 years and experiencing a slight decrease to approximately 57, while production levels of natural gas saw a stable increase to 49 by 1991.

After 1991, for the next 9 years, the figure for petroleum production levels rose to a peak of 144, remaining its position as the fuel with the highest production rates. As for the coal production, it proceeded with its respective trend and increased to a peak of 100 in 2000. In contrast, the figure for natural gas production levels continued to decrease until 2000 and, after being overtaken by coal, became the fuel that was the least produced between 1981 and 2000