The bar chart illustrates the total proportion of oil daily produced in millions of barrels across six nations from 1990 to 2010.
Overall, Saudi Arabia depicted the most dominant oil production over twenty years, whereas Qatar marked the lowest number recorded throughout the twenty-year period.
In 1990, Saudi Arabia accounted for slightly more than 8 million barrels, then rose sharply to slightly above 12 million barrels in 2005. Subsequently, by 2010, the figures had peaked at just above 14 million barrels.
Turning to Iran, Iraq, Kuwait, and UAE, oil production in Iran comprised around 3 million in 1990, while output from Iraq, Kuwait, and UAE averaged approximately 2 million barrels in the same year.
In Iran, the trend rose moderately to 4 million barrels in 2005, ending at a little above 4 million barrels by 2010, while the pattern in Iraq, Kuwait, and UAE increased slowly in 2005, reaching almost 4 million barrels by 2010. Notably, Qatar’s oil production remained at below 2 million barrels over the whole period, except for a slight increase in 2000.