The two pie charts illustrate the variations in the amount of energy produced from various sources in a nation, in the years 1985 and 2003.
Overall, the highest amount of energy was gotten from oIl, while the least was from other renewable sources. While coal, natural gas and other renewable forms of energy increased over time, the power level from nuclear and oil reduced. However, hydro-power stayed the same.
To begin with, in 1985, oil contributed more than half of the total energy in that year and was the largest source of energy supply. This was followed by nuclear and natural power with 22% and 13% respectively. Whilst coal produced 8%, hydro generated 4% and other renewable forms were the least with 1%.
By 2003, there were some differences in the quantities of energy supply. The amount gotten from nuclear decreased to 8% while that of oil reduced to 39%, despite this, it remained the most significant source of energy. On the contrary, the energy levels from natural gas, coal and the other transformable types of power increased to 23%, 22% and 4% respectively. Although, hydro remained unchanged throughout the two years.