The pie charts compare the proportion of energy production in two years, 1983 and 2003.
Overall, the proportions of nuclear power and natural gas witnessed an upward trend, whereas the figures for oil and coal decreased significantly. Moreover, the percentage of hydropower production remained stable over the given time.
In 1983, oil accounted for 42%, which was the highest proportion. This is followed by coal and nuclear power at 23% and 20% respectively. Next is natural gas, accounted for 11%. Ranked last is hydropower, accounted for 4%.
In 2003, oil comprised 38% and was also the prevale/nt power source. This was followed by nuclear power with a 24% increase, reaching 4%. Next are natural gas and coal at 21% and 13% respectively. The most uncommon energy source is still hydropower.
