The line graph illustrates how distribution of energy sources changed over the period from 1990 to 2020. It compares four different categories, providing information about their trends and fluctuations throughout the given time frame.
Overall, it is evident that the figures for the categories followed different patterns over the period. While renewable energy experienced a noticeable upward trend and eventually became the dominant figure, natural gas showed a gradual decline. In addition, coal and nuclear power had almost the same decrease.
At the beginning of the period, renewable energy stood at 10 percet. Over the next few years, the figure rose steadily, reaching around 12 by 2010. This upward trend continued throughout the following period, and the number eventually peaked at roughly 20 in 2020. Meanwhile, coal started at 40 percent. Although it initially increased slightly to 45 in 2010, the figure later declined gradually and fell to approximately 40 percent by 2020.
In contrast, nuclear power showed a stable trend. The figure began at 20 percent and stabile drops during the period, varying between 20 and about 15. Despite these fluctuations, it remained relatively stable compared with the other categories. Natural gas prices fluctuated. Initially, they dropped from 30 to 23 percent, then rose to 25 percent, and then fell again to almost 21 percent.
By the end of the period, the difference between renewable energy and nuclear power had widened considerably, highlighting a significant change in their overall positions.