The pie charts illustrates the units of electric power production source from fuel in two different countries from 1980 to 2000.
Overall,coal and hydra power accounted for over half of all electricity,while the least was other electricity production in both years in Australia. Second country has identical rates in units and significantly growth on nuclear power.
On the one hand,in Australia in 1980 has 20 units of natural gas and around 80 units of coal,oil and hydro power. But in twenty years has undergone significant changes in the production of electricity,the coal Industry has undergone maximum changes and exceeded its record of 130 units and also increased hydro power by 16 units, thus reducing the amount of natural gas and oil by 2 units.
On the other side, in 1980 more than half of chart has occupied by natural gas,coal and oil,and lowest industrials ranked by hydro and nuclear powers,for the overall number of units,there were only 90 items. In 2000 total number of electricity units was 180 items, which includes 126 units of nuclear power and bother items of coal and oil,and approximately 4 units of natural gas and hydro power overall.