The line graph illustrates the distribution of energy sources from 1990 to 2020. Overall, the energy sources in the given chart adhered to almost rising trends, albeit to varying degrees. While, coal generally had higher percentage, followed by natural gas, renewable energy remained at the bottom, despite a gradual increase, in three decades.
Initially, coal was recorded at 40%. In contrast, renewable energy stood at 10%. It was not until these numbers began to surge, with the former energy raising the numbers to approximately 45%, before reaching a peak in 2010 and the latter reaching about 13%. This number had changed by 2020, when renewable energy surpassed nuclear power in numbers reaching 20%. At the end of the period, coal decreased slightly, after which it bounced back to its starting point.
Natural gas and nuclear power, however, somewhat bucked the trend. With former energy source starting at about 30% and the latter with 20%, the percentage in these sources followed an uninterrupted downward trajectory. In 2010, the natural gas reached 25% and the latter one about 19%. At the end of the period, the natural gas reached 21%, while nuclear power finished with 15%.