The pie charts compare the proportions of energy a country generated from six different sources in 1985 and 2003.
Overall, oil was the leading source of energy in both years, although its share declined considerably. Natural gas, coal and other renewables all grew, whereas nuclear power fell and hydropower remained unchanged. Notably, coal and nuclear effectively swapped positions.
Oil accounted for just over half of all energy (52%) in 1985, but this fell by 13 percentage points to 39% in 2003. Nuclear power declined even more steeply in relative terms, dropping from 22% to only 8%.
By contrast, natural gas rose from 13% to 23%, nearly doubling its share. Coal grew the most dramatically, almost tripling from 8% to 22%, which matched nuclear’s former level. Other renewables increased from a negligible 1% to 4%, equalling hydropower, whose share was 4% in both years.