The line graph provide information about the main sources which Produced Renewable energy and also tells about total consumption from 1949 to 2008.
looking from an overall perspective it is evident that there are most popular source of energy was hydroelectric power and wind power was the lowest, and another interesting thing can be noticed that consumption of wind and biofuels Remaing at zero level between 1949 to 1980.
in terms of 1950 to 1960 hydroelectric Power and wood Produced almost same energy being 2 Quadrillion BTU, but from 1960 to 1980 The hydroelectric power was doubled Production of than wood, and after 1980 the Source of Hydroelectric power was contributing With some ups and downs, while wood energy Producing was some rose and it contributing remain same with some Fluctuation in the end of the Period.
moreover total was significant contribute as the overall consumption of energy it reached at 3 Quadrillion BTU to 7 Quadrillion BTU in 1950 to 2008, in year of 2000 total was decreased because of hydroelectric power was also diclined during this time but then both rose again.furthermore wind and Blofuels in 1980 to 2008 both are did not much contributed Just less then 1 Quadrillion BTU.