Band 7+: The pie charts indicate changes in the proportions of energy produced in a country from 1983 to 2003. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The given pie chart illustrates the percentage of different types of energy produced in two selected years, namely 1983 and 2003.

Overall , it is noticeable from the chart that the proportion of oil and coal decreased insignificantly, while the figures for the rest of the energy manufactured had an opposite trend, and only the proportion of hydropower remained unchanged in both years.

In 1983, the proportion of oil was highest and accounted for 42% of the chart. The figures for coal and nuclear power were slightly lower, at 23% and 20%, respectively. Meanwhile, energy produced by natural gas was just 11% of the total energy production in that country, and the lowest figure can be seen in the percentage of hydropower, at 5%.

In 2003, the percentage of oil declined insignificantly but remained the highest figure in the chart, at 38%. The figure for nuclear power went up slightly to 24%, while that for coal experienced a dramatic fall of 10%. The proportion of spending on natural% to 21%, while it can be seen that the figure for hydropower is still stable.