The line graph illustrates the percentage of utilizing sustainable energy among six different countries between 1971 to 2011.
Generally, the graph was splited into two kinds that was fluctuated and moved smoothly among many years. Regarding it, Finland, Denmark and US rose with fluctuation, France, UK and German increased smoothly.
In 1971 the highest point showed Finland and 25%, then at 15% took Denmark. However, US took fairly lowest point which showed approximately 5%. All of three countries oscillated until 1991. US and Denmark increased to 7% and 13%, but Finland decreased and displayed 15%. After 1991, all three lines increased, Denmark and US to 20%, Finland fairly kept the point that was in first years at 25%.
Regarding next three countries that are UK, France and Germany, which increased smoothly comparing the first three ones, their experience was considerable. In initial years, countries had five percentage difference among each other. France displayed 10%, Germany at 5% and UK approximately at 0. However, in last years Germany and France reached the similar point that was 15% and UK took 5%.