A breakdown of the consumption of several fuels during a 200-year period is elicited through the graph. At first glance, although wood was the most popular type of fuels in the beginning, it declined sharply until the end of the period. In contrast, there was an enormous rise in the usage of coal, even though in the middle of period, the number of people using coal decreased gradually.
In the first year, 1800, wood was the only energy used by people which reached to 100 per cent. However, following the next periods wood plumed to around 5 % and no one uses it by 2000. On the other hand, traditional power (coal) grew tremendously to the peak of 70 % in 1900, but it did not take a longer because it experienced a steady downward to 30 % following a century.
In the middle of period, 1900, the modern energy (oil and gas) were introduced to society in which there was a remarkable growth in the number of consumption of oil and gas. Furthermore, the modern energies have reached over 30 % following 1900-2000.