The statistical operation denominated Industrial Statistics (EIA) sets to obtain economic information for the calculation of the main sector macro-figures and serves as an essential basis for the production of the Input ¿ Output Tables and the Economic accounts of the Basque Country. It is also used as the basis of other operations that produce conjunctural indicators for short economical cycles. The units of information are establishments whose main activity, measured in terms of value added generated, is industrial, according to the National Classification of Economic Activities.