The table provided illustrates information on the percentage of electricity generated by four different sources in 2000, 2010, and 2020.
Overall, it is evident that all four sources experienced various changes. Moreover, initially, coal was the most produced energy source, while renewables were the least. Afterwards, however, the positions of these categories were completely inverted.
Regarding the statistics for coal, by 2010, its share had noticeably fallen from 42% to approximately 30%. Furthermore, in 2020, coal halved, dropping to 15%. In contrast, natural gas production accounted for 28%, and in 2010 its proportion notably increased to 35%. By the end of the period, this source had experienced a dramatic drop to 22%.
In terms of nuclear power energy, its share amounted to 20% in 2000. It steadily rose to 22% and then to 25% throughout the period. Lastly, the proportions of renewables such as wind and solar energy rose slightly from 10% to 13% in 2000 and 2010, respectively. By 2020, they had undergone significant growth to about 38%.