Moreover, the literacy gap shrunk only Marginally from 25 percentage points in 1970 to 23 percentage points in 1995. In 1990, the primary school enrollment ratio for girls was 69%, whereas he overall primary school enrollment ration was 77%. Culture and Human Dignity Article 15 of the 1992 Constitution provides that the dignity of all person shall be inviolable. Article 26 also guarantees cultural rights. It further prohibits customary practices which are degrading, dehumanising or injurious to the dignity of a person. A National Commission on Culture (CNC) has been set up to promote a systematic cultural review. The objective is to ensure the promotion and enhancement of the positive elements of Ghanaian culture and to discourage the maintenance of those cultural values and practices which derogate from the dignity of the individual or which conflict with internationally-recognized standards of decency. There is a sustained programme of education aimed at abolishing obnoxious cultural practices such as female genital mutilation (FGM), trokosi, maltreatment of persons suspected to be witches (usually women), and widowhood rites. This Programme is spear-headed by the CHRAJ, the NCCE and a variety of civil liberty-oriented NGOs such as International Needs (G1;ana), FIDA, and the 315t December Women's Movement. In 1995, Parliament passed a law abolishing FGM in Ghana. The practice continues nonetheless, and the CHRAJ and various human rights actors are increasingly pursuing a two-pronged approach of encouraging prosecution of offenders and the education of the public. In August 1998, Parliament passed a bill prohibiting customary servitude, including the infamous trokosi system under which vestal virgins, usually young girls and women, are held in virtual slavery at fetish shrines in atonement for the alleged moral transgressions of their parents or other family members. As with the struggle against FGM, the CHRAJ has been urging the police and thf• wider society to couple prosecution with public education in the campaign to combat the trokosi system.