The picture – given in the task – describes modification of the percentage of power manufactured from 1985 to 2003.
Overall, while the share of oil decreased the persentage of natural gas increased relative to the initial state. However, coal and nuclear changed their place according to mutual interest. Moreover, the percentile of hydro stayed unchangeable.
In detail, the ratio of oil decreased from 52% to 39% in 18 years. On the contrary to this the share of natural gas increased by 10% (from 13% to 23%) . The percentile of other renewable grow up from 1% to 4% between 1985 to 2003.
Turning to the next detail, coal and nuclear changed their place according mutual interest ( in 1985 they make up 8% and 22% in turn but in 2003 accounted for 22% and 8% respectively) . In addition to these, the percent of hydro stayed unchangeable.
