The provided line chart illustrates the amount of renewable energy consumption across six different countries from1971 to 2011.
Overall, it is clear from the chart that most countries experienced a continuous upward trend over a 40-year period. Notably, Finland maintained the highest renewable energy usage, whereas the UK had the lowest figure throughout the period.
Looking at the group with considerable fluctuations, Finland held the dominant share in 1971 at 25%. After varying significantly for 15 years, this country rose gradually to approximately 23%. Similarly, Denmark and the US, which commenced at 15% and 2.5%, fluctuated until 1996. Thereafter, while the former climbed slowly to its peak at roughly 17, the latter rose sharply and became the second largest at nearly 20% by 2011.
With regard to the group with a stabler trend, the UK increased significantly from just around 1% to more than 6% at the end, despite witnessing small drops in 1976 and 2006. Meanwhile, France and Germany share an identical trajectory, rose considerably at the beginning and the end and declined moderately in the bottom. However, the latter increased much more significantly to nearly equal the latter at around 15% in 2011.