The given chart illustrates the comparison of the total oil consumption across four main groups of consumers over the course of 21 years.
Overall, there is noticeable variance in the total amount of oil consumption among consumers over the specified period, with some showing a descending trend, while others demonstrated a gradual increase.
As shown by the line graph, in 2009, the United States consumed roughly 9 million barrels, which was dramatically higher than other nations. While the quantities of oil barrels used reached at the same level when it came to China and Middle East, at 2 million barrels, Western Europe and Japan consumed twice as many as those countries, at 4 million counts.
By 2030, the amount of oil consumed in the USA hit the peak of 10 million barrels, then descending slightly before remaining a stable consumption at approximately 8 million barrels. A reverse trend was observed among Western European and Japanese and Middle East consumers, the former’s group dropped by 2 million barrels, whereas the latter’s group sustainably increased to approximately 3 million barrels in total amount of oil consumption. Despite of an ascending trend was recorded in China, it will reduce marginally its consumption until 2030, at just under 4 million barrels.