Fuel/oil/gas rose very quickly triggered by Katrina not giving "cost of living" a chance to catch up. Inflation went wild on the product most of us need-food. While .gov may not include food in their formula, in my experience it's pretty damned important.
A HUGE chunk of the cost of food is oil. Tractor fuel, fertilizer (oil by product), and of course, ethanol. Of course, that didn't really matter, did it Calvin (bless your heart).
TFF
