The bar chart compares how much of the total energy supply comes from renewable energy sources in 4 nations between 1997 and 2010.
Overall, compared to Iceland and Turkey, Australia and Sweden relied much less on renewable energy. In addition, while Australia and Turkey experienced a decreasing trend, the opposite was true for Sweden and Iceland. Moreover, the most noticeable difference was shown by Iceland.
Focusing on the highest figures first, these were recorded in Iceland and Turkey. Starting at 45% in 1997 in Iceland the percentage of renewable energy increased to 60% by 2000, following by a further rise to 70%, reaching its all-time peak. As for Turkey, a slight increase was seen, rising from 28% to 40%, but had fallen to around 32% at the end of the period.
By contrast, Australia and Sweden showed the reversal pattern. The proportion of renewable energy sources, which stood at 9% in Australia, fell to approximately 6%, and then to 4%. Sweden saw a minimal rise throughout the period, increasing from about 6% in 1997 to 9% by 2010, with 7% in the middle.
