Case C-524/09: Judgment of the Court (Fourth Chamber) of 22 December 2010 (reference for a preliminary ruling from the Tribunal administratif de Paris — France) — Ville de Lyon v Caisse des dépôts et consignations (Preliminary rulings — Aarhus Convention — Directive 2003/4/EC — Public access to information in environmental matters — Directive 2003/87/EC — Scheme for greenhouse gas emission allowance trading — Regulation (EC) No 2216/2004 — Standardised, secured system of registries — Access to data on greenhouse gas emission allowance trading — Refusal to report — Central administrator — Administrators of national registries — Confidential nature of the data held in the registries — Exceptions)