The line chart illustrates information on the manufacture of leading kinds of fuel in the UK over the period of 19 years.
Overall, the largest production level was in petroleum and the lowest was in coal. Energy units are used for measurement.
Regarding petroleum, there was a sharp rise from nearly 90 units to 140 units between 1981 and 1984. After increasing, petroleum remained stable by 1987. It was a fluctuation from 1987 to 1995, then it returned to its previous point of 140 units until 1998. The years of 1998 and 2000 had a constant change.
The coal manufacturing level stayed at the same level of 80 units for 2 years. Then it was a sudden decline from 1983 to 1984, accounting for underneath 40 units. After dropping the coal witnessed a moderate improvement in 1986 at exactly 60 units. After the year of 1986 the production level of coal fell gradually by 2000, reaching above 30 units. Natural gas also saw upward trend, albeit not as much as petroleum in 2000 (compared 140 units to 100 units).