Between the years 1966 and 2000, we will summarize the information of four different countries (i.e., Iceland, Sweden, Italy, and Turkiye) for each year as follows:
1. In 1966, Italy is the country that used the most oil at 90 percent of the total energy use, followed by Sweden and Iceland with oil usage of 80 percent and 70 percent of the total energy use, respectively. Meanwhile, Turkiye is the country that used the least oil at 60 percent of its total energy use.
2. In 1976, Italy remained the country that used the most oil at 95 percent of its total energy use. However, Iceland dropped its oil usage to 45 percent, while Turkiye increased its usage to 75 percent of the total energy use.
3. In 1986 and 1996, Turkiye increased its oil usage to approximately 80 percent more than Iceland and Sweden, while Italy remained the country with the most oil usage.
4. In 2006, Italy dropped its oil usage, while Turkiye increased its usage and became the country with the most oil usage instead of Italy.