Statistics relating to the trading of goods by the Community and its Member States with non-member countries are based on Council Regulation N° 1172/95 (consolidated version) and Commission Regulation (EC) No 1917/2000.
More information on coverage, periodicity, timeliness and quality of data can be found in the Euroindicators metadata:
A complete pool of texts regarding Community legislation in the field of external trade statistics is published by Eurostat and all legal texts of the Community are accessible on http://eur-lex.europa.eu/