The bar chart displays the percentage of renewable energy in total energy production in 4 different nations between 1997 and 2010
Overall, it is clear that Sweden and Iceland witnessed an upward trend in using renewable energy sources in the given period. Notably, among these countries, Iceland was the country where this type of energy was the most popular.
Turning to detail, in 1997, almost half of the energy production in Iceland came from renewable resources. The figure increased steadily to 60% in 2000 and 70% in 2010. Meanwhile, in 1997, just nearly 5% of the entire energy in Sweden was generated from renewable resources, the lowest percentage in all nations. The figure for this country experienced a similar trend to that of Iceland, increasing gradually to approximately 10% in 2010.
Regarding the remaining countries, there was only nearly 10% of energy in Australia coming from renewable resources in 1997 and this figure decreased slightly to 5% in 2010. In contrast, the percentage of renewable energy in Turkey witnessed a fluctuation, starting at over 37% in 1997, then increasing to roughly 41% in 2000, before dropping to around 32% in the last year.