The graph given depicts production rates of the primary types of fuels in the UK from 1981 until 2000.
From a broad perspective, we can observe that each fuel experienced fluctuating flows, significantly for petroleum. Furthermore, coal witnessed a progressive decline until 2000. Meanwhile contrastingly, natural gas denoted a continuous rise.
To begin with, in 1981, natural gas began with the lowest rate at 40%, maintaining stability for 10 years, and slowly increasing to 60% in 1993. Further going upwards in 1996, reaching a level of 80%. Natural gas kept sustaining its rise for the next 4 years, until it finally reached 100% in 2000.
Moreover, petroleum showcased the highest percentage in 1981, comprising 90% rate among all fuels. Petroleum consistently showcased an upward trend for 3 years and was able to reach 140% and maintained its level until it began to go down again to 100% in 1986. In the final year, petroleum successfully achieved its previous peak at 140%.
In addition to that, coal started the year with an account of 80%, depicted a significant downturn to 40% in 1984, before it soared in 1986, and maintained its decrease until 2000