The line graph illustrates the changes of oil prices for each barrel from 1973 to January 2009.
Overall, it can be seen that the oil prices showed fluctuations over the period and closer to two thousand seven the peak was reached there.
In the detail, the price of oil started around with 5$ for per barrel in 1973 and this indicator increased gradually at 40$ per barrel in 1980. This prices of oil declined approximately 20$ for each barrel from 1980 to 1985. The prices of oil fluctuated moderately between 15$ and 20$ from 1986 to 1998.
In 1998, this price rose slightly and we can saw noticeable difference in prices. After 2000, the prices gradually increased at around 60$ and followed by this the prices of oil achieved the peak of this line at just 140$ for each barrel in 2008. The prices significantly dropped to around 50$ for per barrel by January in 2009.
