The line graph shows changes in global food and oil prices over 11 years.

It is easy to see that changes in the food price index and average oil price are quite similar from 2000 to 2011. Especially, in 2008 both food and oil prices reach the highest point in 2008.

In the beginning, the rate of change in food price was quite stable, while the average oil price rose rapidly and fall immediately after that. Up to 2003, the food price still didn't exceed 100 points. But just one year later, the price increased significantly and reach approximately 110 points. On the other hand, the oil price archived more than 40 dollars per barrel for the first time in 2004.

Between 2007 and 2009, the absolute values of the slope of both graphs were the greatest ever seen from 2000. The food and oil prices were reached peaks at more than 220 points and 130 dollars per barrel respectively. At the beginning of 2009, the curves fell drastically, oil prices decrease more than the other.