How much did a gallon of gas cost when you first started driving?

In California, there were "gas wars" between the stations, sometimes as many as four stations at one intersection (one on each corner). Wars meaning each station doing its best to undercut the competition by lowering prices. I remember gas, at times, around 29.9 cents per gallon (circa 1972). According to my internet search, the "average" price in '72 was 36 cents.