The graph shows changes in the rate of oil usage in four countries, including Iceland, Sweden, Italy and Turkey, over a forty-year period from 1966 to 2006.
Overall, what stands out from the graph is that there were considerable downward trends in the oil consumption of Sweden and Iceland, while the oil usage in Turkey saw gradual rise in over the period. Another interesting point is that Italy had highest reliance on oil as an energy in 1966, but in 2006, Turkey took the leadership.
More specifically, as regards Italy, the percentage of oil usage started at 90% in 1966, then there was a slight rise until it peaked at approximately 95% over the next decade. Further however, the rate experienced a gradual decline, ultimating at around 85% in 2006.
Likewise, Iceland and Sweden demonstrated a lowering rate of oil usage. As for Iceland, it started at 80%, falling significantly to 40% for the following twenty years. Further, it proceeded falling, although it followed a relatively moderate pace, reaching its lowest point at about 35% in 2006. Regarding Sweden, the trend was similar. Starting at roughly 70% in 1966, the rate witnessed a nitable reduction to 30% in 1966. Having remained stable at the rate over the next decade, it further fell reaching its lowest figure at 20% in 2006.
By contrast, as for Turkey, it followed an opposite trend over the period. Beginning at 60% in 1966, the rate of oil usage in Turkey witnessed a substantial growth over the whole timeline, peaking at just under 90% in 2006.