Description of methods and sources for Albania - INSTAT

IPA 2009 Multi-beneficiary StatisticalCooperation Programmeat the most detailed compilation level, construct long time series of non-seasonallyadjusted traditional constant price data with a fixed-base yearaggregate these detailed constant price data using the annual chain-linked Laspeyresframework:o for each year, revalue all detailed constant price data to the constant averageprices of the previous year;o add together these revaluated data measured at the average prices of theprevious year to construct the various aggregates and sub-aggregates at theconstant average prices of the previous year;o construct long time series with a fixed reference year by chain-linking theaggregates and sub-aggregates at the constant prices of the previous year,using the annual overlap technique.168/236