I didn’t narrow it down to an exact number, I meant that it’s going in spikes. Over 12 months it’s increased $1.00/gallon, btu then there are a few months where it may only go up a couple cents/gallon.
I just meant it would be easier to jsutify if it was a steady increase. Your math is irrelevent since gas hasn’t gone up $0.327 every month for the past 7 years.