Without looking at inflation-adjusted prices it is difficult to see where gasoline prices actually stand. Back in 1918 gasoline was $0.25 a gallon and by 1932 prices had fallen to 18 cents a gallon! But as we all know over the last 100 years the purchasing power of the dollar has fallen drastically so in order to get the true picture we can’t just say that the lowest price of gas was 18 cents per gallon, we need to adjust the price for inflation. When adjusting for inflation there are two prices… the first is called the “nominal price” and that is the actual price you would have paid for gas at the pump. The key price though is the inflation-adjusted price which calculates what the price would have been if we were spending current dollars on a specific date. In this case, we are basing our calculations on the value of a dollar in January 2020.