The supplied bar chat deplicts the rate of renewable energy in total energy supplied of 4 nations in 2000,2004 and 2007.
In general, Iceland and Sweden shows an upward trend in the percentage of renewable energy, whilst Australia and Turkey experienced reverse trend of that renewable energy came from energy supply. Notably, Iceland has the largest proportion throughout the entire period.
In details, the percentage of renewable energy in iceland and turkey, the figure of iceland in 1997 was almost 46% and incresed to 60% and 70% in 2000 and 2007 respectively. Similarly, the rate of renewable energy came from energy supply was approxiametly 39% in 1997 and incline to 41% in 2000, and then decline in 2007.
Regarding remaning countries, The percentage of sustainable energy in australia was 9% in 1997 and then decreased to 8% and 5% in 2000 and 2007. On the other hand, swedan experienced least percentage in 1997 which was 6% and then marginally rose to 9% in 2007.
