The pie charts represent the proportion of total energy consumption from five different sources in the years 1985, 1995, and 2005, with all figures given in percentages. Overall, it is clear that the figures for gas and natural gas increased, while renewable energy decreased. Of particular note was oil, which witnessed an upward trend by 1995, but then dropped again.
In 1985, the figure for nuclear energy was about 31%, while renewable energy was approximately 27%. The percentages of total energy consumption from Oil were about 25%, whereas gas and nuclear gas trailed behind with around 9% and 8% respectively. By 1995, the figure for nuclear energy dropped to about 25%, compared to renewable energy with around 24%. The percentages of total energy consumption from gas and natural gas increased by 2% each (from 9% to 11%, and from 8% to 10%) respectively, while oil increased to approximately 30%.
Surprisingly, in 2005, the figure for nuclear energy remained stable, while the percentages of total energy consumption from renewable energy and oil decreased to around 18% and 25% respectively. The figure for gas was about 14%, following closely by natural gas with approximately 11%.