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The paragraph compares the percentage of renewable energy used between 4 countries in 3 years: 1997, 2000 and 2010.

Overall, Iceland had the highest amount of renewable energy in total energy supply in comparison with Australia, Sweden and Turkey. In addition, these consumption in Australia and Sweden were at the similar level in 3 years mentioned.

In 1997, the total energy in Iceland had 45% of renewable energy, and this witnessed a rapid increase to precisely 70% in 2010. In Turkey, two fifth energy used was renewable energy, which was 4 times greater than those in Australia and Sweden.

After peaked at more than 40% percent, the figure for renewable energy in Turkey experienced a decrease by more than 5% in the period of 10 years from 2000. Although Australia had higher quantity of renewable energy used than that in Sweden in 1997, this figure of this country underwent a slight fall from 10% to 5%. The opposite is true for Sweden, which increased from 5% to nearly 10% through the period shown.