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, whereas the reverse was true in the case of Australia and Turkey.
In 1997, the percentage of renewable energy provided in Iceland as the highest among the countries, standing at about 45%, which was dramatic higher than that of Turkey, at roughly 37%. Conversely, Australia and Sweden were at the bottom with under 10% in the total amount of renewable energy supplied.
Throughout the 13-year period shown, the renewable energy generated in Iceland recorded a remarkable rise to 70% of the total supply. Similarly, another country that witnessed a growth in the production of renewable energy was Sweden, with an increase to 10% at the end of the period. By contrast, Australia saw a fall in the percentage of energy produced from natural resources, dropping to 4% in 2010. Additionally, there was a fluctuation in Turkey’s renewable energy, soaring to 40% after three years before decreasing to over 30% at the end of the period.