The two pie charts illustrate the percentage of substances in china in 1985 and 2003.
Overall, the proportion of coal recorded the highest percentage in both periods, while hydrogen and other renewables anthe same and lowest percentage in the both periods.
The percentage of coal accounted for 30% at the beginning of the period, and this figure increased slightly to 35% at the end of the period, while oil dropped slightly from 25% in 1985 to 20% in 2003. Meanwhile, the percentage of nuclear made up 20% at the beginning of the period, and then it dropped to 15% at the end of the period.
The proportion of natural gas amounted to 15% at the beginning of the year, and this figure rose slightly to 20% at the end of the year. In contrast, the percentage of hydrogen and other renewables accounted for the lowest and same percentage in both period, at 5%.
