Th pie charts below show changes in the proportion of energy produced from different resources in a country in 1985 and 2003 .

The two pie charts compare the 6 different types of categories which producing of energy in a particular country between 1985 and 2003. Units are measured in percentage.  It is noticeable that the proportion of natural gas , coal and  other renewable experienced  a  considerable rise over the given period

while

this

figure for  oil and nuclear  saw a significant decrease but Hydro was the only pie which was unchanged. In 1985, Natural gas had a small per cent at 13% but by the end of the given  ,period we can see a 10% increase from 13% to 23%. Followed by coal( 8%) and other renewable(1%)  sources had an important role in producing energy, and experienced considerable growth from 8% to 22% and 1% to 4% respectively. 

By contrast

, In 1985,  almost half of the electricity production was made up of oil (52%)  which was the main part of production

however

by 2003

this

figure had fallen by 39% . During 18 years nuclear 

also

experienced a 14 percent decrease from 22%  to 8% . Hydro was the only unchanged pie of the chart  making up 4% .