What did gas cost a year ago and what does it cost now?

And...? The CPI is a weighted basket. Gas costing 2x (or whatever) doesn't mean CPI is 2x. Is that hard of a concept to grasp?

Energy going up 16%, because gasoline went up 30%, is the main reason "core CPI" and full CPI are a full percent apart, 2.4% versus 3.4%.