The provided pie charts illustrate the changes in the distribution of energy production from various sources within a country for the years 1985 and 2003.
A significant reduction in oil dependency is observed, accompanied by a notable increase in natural gas utilization. The remaining energy sources maintain relatively stable proportions throughout the designated period.
In 1985, oil constituted the predominant source of energy production at 52%, while the shares of natural gas, coal, nuclear, and hydro were significantly lower at 13%, 8%, 4%, and 4% respectively. By 2003, oil’s contribution had notably diminished to 39%, indicating a decline of 13 percentage points. Conversely, natural gas experienced substantial growth, rising to 23%, which reflects an increase of 10 percentage points over the 18-year period. Interestingly, the proportions of coal, nuclear, and hydro sources remained unchanged at 8% and 4% respectively, indicating a relative stagnation in these energy sectors during this timeframe.
Moreover, the category of other renewable sources exhibited no change, holding steady at 22% in both years. This stability in renewable energy output contrasts sharply with the trends observed for fossil fuels. The nuclear energy sector experienced a significant reduction from 4% in 1985 to 0% in 2003, highlighting a critical shift away from this energy source. Overall, the evolving landscape of energy production reflects a gradual transition towards a more diversified energy mix, primarily driven by increased adoption of natural gas while simultaneously reducing reliance on oil.