The line graph illustrates how much being renewable overall energy in four various countries in three period 1997, 2000, and 2010. Overall, the percentages of renewable energy experienced a gradual rise in Sweden and Iceland while that of Australia and Turkey decreased slightly over the period.
The percentages of renewable energy increased gradually in Sweden by approximately double from around 5% to under 10% between 1997 and 2010 while that of Iceland saw a significant rise from more than two-fifths to 70%, with significant dominance among three countries over the period.
There was a slight gradual decline in the proportion of renewable energy in Australia, by 5% from under 10% to approximately 5% between 1997 and 2010 whereas that of Turkey increased slightly by 5% from more than third to about 42% next period and then it declined minimally about 8% from 42% to around 36% in the last period.