Entire area of the country coinciding with the customs territory. The prices are collected monthly, on the same day of the reference month or as close to this day as possible. However, there are 36 products including rice, potatoes, oranges, grapes, meat, sea food, etc., for which the average of the weekly prices are used in the index. The prices exclude the value added tax and the excise duties on products. The import prices in foreign currency are converted into pesos on the day of the transaction using the market exchange rate determined by the Central Bank of Chile.
Weight updates coincide with the compilation of the input-output table.
The last update in 1992 was to the 1986 data from the input-output table. The prices are collected on paper collection forms from individual establishments by mail questionnaire. In case of a missing price, the previous observed price is carried forward. Replacement items are selected along with the introduction of new products usually at the beginning of each year. In the second method, explicit quality adjustment is made based on the information concerning the percentage price effect of the quality difference, which is obtained from the respondent.