The bar chart illustrates the proportions of renewable energy generation across four nations—Australia, Sweden, Iceland, and Turkey—over the span of three years: 1997, 2000, and 2010.
Overall, it is evident that Iceland consistently led in renewable energy production. Moreover, it is noticeable that diverse trends in renewable energy utilization from 1997 to 2010 can be seen across the four countries.
Iceland demonstrated remarkable progress in the generation of renewable energy, with an average growth rate surpassing 10%. The country increased its renewable energy share from 46% in 1997 to 70% by 2010. Sweden also saw a steady rise in renewable energy usage, beginning at approximately 6% in 1997 and reaching nearly 10% by the end of the period.
Conversely, Turkey and Australia displayed decreasing reliance on renewable sources. Australia’s renewable energy contribution began at approximately 40% in 1997, but experienced fluctuations, ultimately dropping to 32% by 2010. Turkey’s renewable energy share consistently represented less than 10% of its total energy output throughout the recorded period, with a continuous decrease over the period.