The given bar chart illustrates information about the percentage of renewable energy supplied in Australia, Sweden, Iceland, and Turkey between 1997 and 2010.
Overall, it is evident that there were upward trends in the figures for renewable energy provided in Sweden and Iceland throughout the observed period. In contrast, the reverse was true in the case of Australia and Turkey. The renewable energy supplied in Iceland was by far the most popular among the countries in all three years examined.
In 1997, almost half of the total renewable energy was produced in Iceland and this figure continued to climb gradually to 60% in 2000 and exactly 70% in 2010. Similarly, the entire amount of energy generated from natural resources in Sweden was about 5%, which experienced a slight increase of about 3% to 9% in 2010.
In terms of Australia, the percentage of renewable energy supplied marginally declined from nearly 10% in 1997 to 4% in 2010, with a decrease of 6%. Only Turkey underwent a fluctuation, initially rising to 40% after three years and ending at over 30%.
