上网查了一下：CPI-W 里应该已经包括能源和食品的消费价格了，见内

The CPI-W population represents approximately 30 percent of the total U.S. population and is a subset of the CPI-U population. The CPIs are based on prices of food, clothing, shelter, fuels, transportation, doctors' and dentists' services, drugs, and other goods and services that people buy for day-to-day living.