The given bar chart illustrates how much renewable energy used in total energy supply in four various countries over a span of 13 years starting from 1997.
Overall , while the usage of renewable energy in Sweden and Iceland adhered to rising trends albeit to varying degrees, the reverse was true for Australia and Turkey which experienced a moderate decrease in the amount of renewable energy used.
In 1997 the proportion of renewable energy in total energy source stood at 5% and around 45% in Sweden and Iceland respectively and the former saw a slight growth to 9% however there was a significant increase in the latter to whopping 70% in the end of the period given.
Remaining two countries bucked foregoing trend , in 1997 the figure for Australia in terms of renewable energy in overall energy supply accounted for approximately 9% in 2010 it decline down to 5 % which was Sweden’s initial point. Similarly, in Turkey just under two-fifth of energy was renewable this proportion rose merely to exact 40% before declining to around a third .