The given pie charts depict the data about the proportion of energy produced from different resources in a country between 1985 and 2003.
Overall, the proportion of energy produced in natural gas,coal and other renewable resources increased between 1985 and 2003, while that of them in the oil and nuclear showed reverse.
Three out of six given categories witnessed rise in the share of energy produced. The proportion of energy for natural gas causes rose from 13 % to 23%. Meanwhile, the largest growth was observed in the coal resources where the percentage increased by 14% to 22% in 2003. The other renewable, however, had the lowest grow of 1% and 4% in 1985 and 2003 respectively.
By contrast, oil resources declined from 52% to 39%. A 14-percent drop was recorded in the Nuclear resource, accounting for 8% in 2003. However, hydro resource had reached a plateau by 4% in 2003.