The chart illustrates the percentage of the oil consumption in four different countries over the period from 1966 to 2006.
As clearly seen from the chart, consumption in Italy was by far the greatest at the beginning of the period, remaining stable at about 90% throughout 50 years. Looking at Sweden and Iceland, their figures showed similar change during entire period, more than halving at 35% and 20% respectively.
In contrast, figure for Turkey rose significantly from 60% to 90% by the end of the period, overtaking that for Italy in around 2000.
According to the figure provided, the amount of oil consumed in Iceland, Italy, Sweden showed downward trend, while usage of that in Turkey continued to increase.