The charts delineate changes in the percentage of energy generated from distinct resources in a nation from 1985 to 2003
Overall , natural gas was the most widely used resource of energy production . Meanwhile the proportion of energy production resources such as coal , other renewable , nuclear ,and oil witnessed upward trends , conversely , it was reverse for hydrogen
The use of natural gas production took the lead in the whole of energy production resources , at 52% in 1985 and 39% in 2003 . The proportion of energy produced from oil and coal increased substantially with the former rose from 13% in 1985 to 23% in 2003 and the latter was from 8% in 1985 to 22% in the next 18 years while the figure of nuclear experienced a sharp decline from 22% to 8% over the given period
Hydrogen was the only energy production that remained unchanged throughout the period, at 4% . Lastly , there was a slight increase in the proportion of energy produced from other renewable, from 1% in 1985 to 4% in the final year