The pie charts provide information about proportion of energy generated from different sources, such as, oia, nuclear, heyrogen,coal, natural gas and other renewable sources in a country in two year(1985 and 2003).
overall, the higest source was oil but, be the end of given period it dropped while, other renewable sources were the lowest. However, there was the some stabilase with hydron source, also there oil source shoewd a decrease. Moveover, others demonstrates a increase.
Regarding the natural gas, it was 13% at the start of period time, then it jumped to a peak value by the end of year to 23 %, then coal also grew slowly at 9% in 1985 to 13% by 2003. After which, other renewable sources rose insignificantly, at 1985 it was exactly 3% then, it increase mildly to 4% be 2003.
In comparison, oil was the highest produced energy source (52%) in the biginning, but, it declined to 39%, moreover, it still the highest generated energy. Additionally, hegdrogen was at 4% after which, still unchabged by the final year. Likewise, nuclear energy was 22% at 1985 then, it declined to 17% by the last year.