> Why don't they just measure it month-to-month Because there are seasonal variations, e.g. gasoline tends to be a bit more expensive in summer in the USA htt

> Why don't they just measure it month-to-month Because there are seasonal variations, e.g. gasoline tends to be a bit more expensive in summer in the USA https://www.eia.gov/energyexplained/gasoline/price-fluctuations.php https://www.eia.gov/energyexplained/gasoline/price-fluctuati...