Uruguay adopted its current constitution in 1967. Many of its provisions were suspended in 1973, but re-established in 1985. Drawing on Switzerland and its use of the initiative, the Uruguayan Constitution also allows citizens to repeal laws or to change the constitution by popular initiative, which culminates in a nationwide referendum. This method has been used several times over the past 15 years: to confirm a law renouncing prosecution of members of the military who violated human rights during the military regime (1973–1985); to stop privatization of public utilities companies; to defend pensioners' incomes; and to protect water resources.