The chart show the estimated capacity of oil production among six states in years 1990, 2000, 2005 and 2010 .
Overall, it clearly shown that Saudi Arabia was the highest country in oil production ,while Qatar was the lowest city in the 4 different years .
According to the given data in the provided figure, it is barely represents that Saudi Arabia started with about 9 million barrels per day in 1990 ,then it grew up with nearly 14 million barrels per day in 2010 in an upward trend . On the other hand , Qatar began with around 1 million barrels per day in the first year then it had a fluctuation trend that ended with nearly 1.2 barrels of oil in 2010 .
In contrast , all of Iran , Iraq , Kuwait and UAE were similar in the estimated capacity of oil production. They began with ( 3,2,1.8, 2.8) respectively in 1990 .Although they rose up significantly to reach 4 million barrels of oil per day in 2010 .
