This line graph represents numerical trends of the amount of major fuels produced, consisting of petroleum, coal, and natural gas in a European country from 1981 to 2000.
Overall, it is noticeable that there were fluctuations in both petroleum and coal. While petroleum reached its peak of nearly 145 energy units, coal summited at approximately 80 units. However, natural gas production unit increased continuously. Interestingly, by the year 2000, the UK generated petroleum at the highest rate, followed by natural gas, and coal.
Focusing on the production rate of petroleum, the data shows that around 90 units were generated in 1981. From 1984 to 1987, the amount of petroleum manufactured by the UK remained stable at 140 units. Subsequently, the number has significantly dropped by 40 units. Since 1989 onwards, the figure continuously increased.
Turning to the information of coal production unit, it reached its initial peak at 80 units. Unfortunately, there was a rapid drop by half in1984. Afterwards, it moderately increased to 60 units by the year 1986. However, the number consistently declined throughout the year from 1986 to 2000.