The data illustrates the percentage of substances in china for two years 1985and 2003
Overall,it is clear that coal had the largest values in both years while hydrogen recorded the lowest . furthermore it was amongst the substances that surged .
Coal constituted the majority proportion with 30percent followed by oil at a quarter . Nuclear substance plummeted significantly with a percentage of 20 in 1985 and 15 in 2003 , conversely natural gas saw a notable surge with 15 percent in 1985 and 20 percent in 2003.
Oil recorded a significant drop of 5 percent while hydrogen remained stagnant in both periods .it plateaued with a negligible amount .in both years coal made up the largest proportion while hydrogen and other substances accounted for the minor proportion.
