xiāo​fèi​zhě​jià​gé​zhǐ​shù

consumer price index

  1. consumer (economics)
    a person who uses goods or services to satisfy their needs
  2. price
    The cost of a product or service expressed in terms of money
  3. index
    A number used in statistics to show how much a value (such as prices or productivity) has changed compared to a base period.