The line graph illustrates the consumption of renewable energy in 6 different countries from 1971 to 2006.
Overall, there was an upward trend in the proportion of renewable energy consumption in almost all countries, except for Finland. However, Finland remained the leading country in consuming this source of energy throughout a 35-year period .
In 1971, Finland consumed the largest share of renewable energy, at around 23%, but its figure gradually decreased to 18% in 2006. Meanwhile, Denmark constantly fluctuated between 10% and 15% before witnessing a steady increase to approximately 17% in the final year of the period. In contrast, although the percentage of renewable energy use in the US started as the second lowest at nearly 3%, it had risen sixfold before the end of the surveyed period.
As for the remaining countries, they all recorded less dramatic changes. While the data for France slightly declined, falling from just under 15% in 1971 to about 12% by 2006, Germany showed a substantial increase, almost tripling from around 5% to 14%, surpassing France towards the end of the period. The United Kingdom consistently registered the lowest shares, though its proportion more than doubled, climbing gradually from approximately 1% to 5%.