Judgment of the Court (Grand Chamber) of 14 December 2004 in Case C-309/02 (reference for a preliminary ruling from the Verwaltungsgericht Stuttgart): Radlberger Getränkegesellschaft mbH & Co., and S. Spitz KG v Land Baden-Württemberg (Environment — Free movement of goods — Packaging and packaging waste — Directive 94/62/EC — Deposit and return obligations for non-reusable packaging that depend on the overall percentage of reusable packaging)