With few exceptions, most of the justice system is administered by national judicial institutions. The legal system is uniform throughout the Spanish state, with the exception of some parts of civil law – especially family, inheritance, and real estate law – that have traditionally been ruled by so-called foral law.[17] The fields of civil law that are subject to autonomous legislation have been codified in the Civil Code of Catalonia (Codi civil de Catalunya) consisting of six books that have successively entered into force since 2003.[18]