The provided two pie charts enumerate the comparison between changes in the percentage of energy in six broad categories in a particular country from 1985 and 2003.
Overall, the most noticeable changes were seen in the oil, coal, nuclear, and natural gas, while the other remaining sections depicted a minimal change over the time frame.
At first glance, in 1985 the percentage of oil was 52%, which after fell considerably to 39% in 2003. Moreover, despite the fact that natural gas started at 13%, its proportion rose by 10%, which accounts for 23%. Furthermore, between 1985 and 2003, the proportion of other renewable energy option trebled to 4%.
In addition, before going to number of 22% in 2003, coal was at 8% in 1985. Although nuclear reached its peak in 1985, which was 22%, and in 2003 it underwent a percentage of less than one in 10%, while that of hydro stood constant over the given period of time.