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

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

What is depicted in the given graph is oil production capacity of several Gulf nations namely Iran, Iraq, Kuwait, Quatar, Saudi Arabia and UAE over a 20-year period from 1990 to 2010.

Overall, what stands out from the graph is that while there were upward trends in the estimated amount of oil produced in all the Gulf countries, Saudia Arabia has the greatest capability of oil generation.

Looking at the details, in 1990, Saudi Arabia produced well above 8 millions of barrels on the daily basis. After witnessing a sharp rise to more than 12 million barrels per day in 2005, it continously grew by 2 million barrels at the end of the researched period. In contrast, the lowest oil producing country was Quatar at under 1 million barrels per day throughout the given years eventhough it went through a slight increase in 2000.

According to the graph, oil production capacity of the remaining four countries seemed to experience the same upward ceiling. Iran generated about 3 million barrels of daily oil at the beginning and then gradually to above 4 million barrels in 2010. Meanwhile, the production of oil in Iraq, Kuwait and UAE tended to rise between 1990 and 2010, their expected capacities only reached nearly 4 million barrels per day.