The line graph illustrates relative cost changes for diverse food items from 1979 to 2009. Overall, fresh fruits and vegetables had steeply increased, which marked the highest price in 2009 among all categories. Otherwise, carbonated drinks showed a moderate rise during 30 years, which was the lowest part of all.
To begin with, all goods’ price started at over 50. However it had changed during 30 years, as the cost of fresh fruits and vegetables marked around 350, which was the highest, and that of carbonated drinks reached over 150, which was the lowest.
Following this, other categories also displayed growing trend in their costs, as consumer-price index had risen almost four times higher price than before, and sugary products showed a big difference within the cost which marked at 200, respectively. For 9 years between 1979 and 1987, every category illustrated similar growth, while after 20 years the price gad had changed respectively.