The line graph shows five different sources of energy usage in Australia from 1980 to 2030.
Overall, it is apparent that all types of energy consumption showed an upturn in the 1980-2010 period, and they were predicted to keep on growing until 2030. The figure for oil was the highest among all sources of energy surveyed, and the opposite was true for solar and nuclear.
The main source of energy was oil. In 1980, approximately 35 billion units of oil were used. After a decade, the consumption went down to 30 billion units before it increased steadily to about 38 billion units by 2010. The usage of oil is expected to reach a peak of about 50 billion units by 2030. On the countrary, from 1980 to 2000, no one used solar and nuclear energy in this period. The usage of nuclear and solar energy increased slightly to 5 billion units by 2010, and both of them are predicted to rise in the next 20 years, with the former will exceed the latter (7 billion units compared to 8 billion units).
Regarding two other sources of energy, in 1980, the proportion of natural gas usage was higher than that of coal usage, with respective figures being 20 and 16 billion units. In the next 30 years, while the usage of coal made a leap from 16 to 25 billion units, that of gas fluctuated and stood at 18 billion units, which was lower than the figure in 1980. The coal and gas consumption are expected to gradually increase and end at about 32 and 25 billion units, respectively