The graph compares renewable energy capacity in four different countries in 1997,2000 and 2010. Overall, Iceland emerged as the dominant country, demonstrating a significant growth over time, while Turkey, being the second country that showed great reliance on alternative energy, registered a noticeable decline. Sweden and Australia, in contrast, recorded the lowest shares of renewable energy supply.
Sweden and Iceland were the nations that represented an increase in renewable energy use. Starting at approximately 7%, the former underwent a modest, but uninterrupted rise to 10% in 2010, while the latter recorded a more pronounced growth. Iceland began at considerable 45% and reinforced its lead over time, accounting for 70% in 2010.
Turkey and Australia, however, diverged from this pattern, demonstrating modest decreases. Australia initially stood at almost 10%, but later dipped to a mere 5% of alternative energy capacity, contributing to the smallest share among all countries. Turkey starting at approximately 38%, first exhibited a notable increase to roughly 41%, but its reliance on renewable energy decreased to 35% during the next decade. Nevertheless, Turkey maintained its position of the second most renewable-energy-dependent nation.