Acronym for General Price Index – Domestic Supply. It measures the price variance on the wholesale, consumer, and construction market. It consists of the sum of three other indexes: WPI (Wholesale Price Index) with a weight of 60%, CPI (Consumer Price Index) with a weight of 30%, and NCCI (National Construction Cost Index) with a weight of 10%. The GPI-DS excludes imported goods, considering only what is produced internally. It is calculated based on prices calculated from the first day to the last of each month.