The three pie charts illustrate the percentages of total energy consumption from five different sources in 1985, 1995 and 2005.
Overall, the proportions of energy consumption from gas and natural gas increased over the period, whereas those for renewable energy and nuclear power declined. Oil consumption fluctuated, rising in the first decade before returning to its original level.
In 1985, gas accounted for 9% of total energy consumption. This figure rose slightly to 11% in 1995 before reaching 14% in 2005. Similarly, the proportion of natural gas increased steadily from 8% in 1985 to 10% in 1995 and 11% in 2005.
By contrast, nuclear energy accounted for the largest share in 1985, at 31%, before falling to 25% in 1995 and remaining unchanged in 2005. Renewable energy also declined over the period, from 27% in 1985 to 24% in 1995 and just 18% in 2005. Meanwhile, oil consumption rose from 25% in 1985 to 30% in 1995, before falling back to 25% in 2005.
