The pie charts compare the proportions of energy production over a span of 10 years.
Overall, it is clear that all energy productions followed an upward trajectory, with the notable exception of petro, whose production saw a decline over the given period. Additionally, the production of coal led the pack in both years, while the reverse was true for unspecified sources.
Looking at 1995 first, the proportion of coal was the highest figure in the chart with 29.80%, followed by closely gas 29.63% and petro 29.27%. However, the shares of unspecified others and nuclear fall significantly behind with the respective figures, 4.90% and 6.40%.
By 2005, all the figures had shifted considerably, the figures for coal and gas continued to lead, at 30.93% and 30.31% respectively. However, the percentage of petro exhibited a downward trend, declining to 19.55. Lastly, the figures for unspecified others and nuclear showed a negligible growth to 9.10% and 10.10%, respectively.