The graph shows estimated oil production capacity for several Gulf countries between 1990 and 2010. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The given bar chart compares data about how much V barrels of oil per

millions

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million

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were produced by countries that had access to the Persian Gulf from 1990 to 2010.

Overall

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, it was important that the amount of oil capacity in all countries other than Qatar increased over the period of 20 years;

additionally

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, most production was for Saudi Arabia.

According to

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the graph, Saudi Arabia, the main generator of oil at 4 points in time, hit just over 8 in the beginning;

then

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its trend climbed significantly to nearly 15 in 2010. The second country was Iran, rising from about 3 in 1990 to roughly 4 in 2010. The UAE and Iraq touched approximately the same number at 2 in 1990;

thereafter

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, the figure of UAE stabilized until 2000 after that, it jumped slightly to nearly 4 in 2010, but Iraq grew marginally to 4 in 2010. The diagram demonstrates that at the start, Kuwait reported just under 2;

then

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it went up moderately to approximately 3 in 2010. Qatar, the

last

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country, scored almost zero all the time.