The given chart illustrates capacity of oil production in different countries: Iran, Iraq, Kuwalt, Qatar, Saude Arabia and UAE during the period from 1990 to 2010.
Overall, Saudi Arabia was the highest proportion, while Qatar was the lowest proportion during the given period.
In 1990, Saudi Arabia was approximately 9 millions of Barrels per day. Consequently, by 2010, this figure went up sharply and illustrated 15 millions, respectively. In contrast, Iran was the secong leading figure. In 1990, the capacity of oil production in Iran was approximately 3 millions. This number increased by 2010, and showed 4.5 millions. Iraq and Kuwalt demonstrated almost similar results. In the beginnig of period, the oil production capacity in Iraq was about 2.1 millions, while in Kuwalt it was 2 millions. By the ending of the period, this figure increased minimally. It was about 4 millions and 3.9 millions, respectively. By the way of contrast, UAE was 2.2 millions in 1990, and 4 millions in 2010.
Comparing to other countries, Qatar showed the lowest results in oil production capacity. In 1990, it was approximately 0.5 millions of barrels per day. Then, this figure went up in 2000, from 0.5 millions to 0.7 millions. However, in 2010, this number was dicreased and was almost 0.5 million, respectively.