The bar chart gives information about the level of oil production in six different countries over the period from 1990 to 2010.
In general, during this period of time, almost all countries experienced a noticeable increase of oil production, whereas only one country recorded a decline over the period.
During the period from 1990 and 2010 Qatar consistently recorded the lowest level of the oil production among the six countries, with its figure remaining below 2 million barrels throughout the period.By contrast, oil production increased stedealy from 1990 to 2010 in Saudi Arabia.The figure rose significantly from approximately 8 million barrels in 1990 to around 16 million barrels by 2010.
Turning to the remaining four countries, all of them recorded increases in oil production over the period, although the extent of growth varied considerably.Iraq and Kuwait followed a simular pattern, with their oil production figures increasing gradually from around 2 million to aproximately 3 million barrels.In contrast United Arab Emirates flactuated throughout the period before ending at slightly high level at the beginning
