The provided bar chart compares valence of oil produced between six middle east countries in the years 1990, 2000, 2005 and 2010.
Notably, over the years mentioned, Saudi Arabia was the market leader of oil in region and continued stood out as highest ranking in given bar chart.
In 1990, Saudi Arabia produced around 8 millions of oil barrel per day, which is almost 4 times more than third highest oil producer country, UAE. The second ranking rate in term of oil production capacity, as shown bar chart depicts, is for Iran with almost 3 millions oil barrels per day. Other countries such as Iraq, Kuwait and Qatar produced under 3 millions of oil barrels per day each, respectively.
Over 2010, Saudi Arabia oil production had increased significantly exceeding 14 millions oil barrels per day and stayed as predominant in oil bazaar, conversely Qatar saw stability in chart and other mentioned countries saw slight rise, However it is not comparable with Saudi Arabia production ranking. Countries such as Iran, UAE and Kuwait had competitive situation across the span of 20 years.