The line graph compares the amount of consumption of developed contries the renewable energy for their needs between 1971 to 2011.
It is claer that, in 3 big cities,such as Finland, Denmark and the US, were a fluctuated consumption of renewable energy, while in France, Germany and the UK the demand of using renewable energy rised gradually over the period.
According to the line graph, in 1971 a peak consumption of green energy experinced in Finland, which represented nearly 25 megawatt a year and had remain same index till 2011 at about 23 megawatt a year, while in Denmark and United States the renewable energy were not common source of energy in 1971 than 2011, which increased drammatically by 3 and 15 megawatt a year, respectively.
On the other hand, in Germany had a big jump in using of renewable energy throught the period, from 5 to 14 megawatt a year. Also, while in the UK the amount of renewable energy rise steadly twice, in Freance that index changed sharply from 7 to 15 meagwatt a year.
