The chart illustrates data about the percentages of renewable energy with regards to the total energy production in four different countries (Australia, Sweden, Iceland and Turkey) in three years, 1997, 2000 and 2010.
As can be seen from the chart, Iceland and Sweden witnessed an upward trend in the proportion of sustainable energy in the three surveyed years, while the rests showed the opposite. It is also apparent that Iceland has the highest amount of renewable energy used.
In 1997, almost half of energy produced in Iceland was renewable energy. After that, the figure continued to increased noticeably to 60% in 2000 and 70% in 2010. Meanwhile, Sweden, despite undergoing a similar trend with Iceland, only went up minimally by only less than 2% (from approximate 5% to about 8%) over the surveyed period.
On the contrary, despite showing a rise in the production of sustainable energy from nearly 38% in 1997 to more than 40% in 2000, Turkey witnessed a moderately decline in the figure to less than 35% in 2010. Similarly, Australia’s renewable energy supply fell gradually, from less than 10% in 1997 to around 7% and 5% in 2000 and 2010, respectively.