The graph below compared the percentage of recyclable power in the total power supply in 4 particular countries over the period from 1997 to 2010.
Overall, it is clear that Iceland was the country that has much energy renewable compared to another three countries. Furthermore, stood in the second stage is Turkey which has a higher percent renewable resources than Sweden and Australia.
In Iceland, the figures for renewable energy in summary energy supply increased dramatically over this period. Peaking at approximately 45 percent in 1997, after that 3 years raised to 60 percent, finally reached 70 percent at the end year of the survey. Sweden and Iceland acted similarly, growing up all year of the survey. However, the number of power in Sweden remained at less than 10 percent in the last year.
In comparison, the percentage of renewable energy in the supply areas in Turkey fluctuated a little over these 13 years and peaked at more than 30 percent in 2010. Moreover, in Australia, the figure for recyclable energy decreased steadily, and surged to under 5 percent in 2010.