The National Crime Survey (NSC) is a survey of victims of crime, based on the methodology of the International Crime Victims Survey, originally developed by UNICRI (the United Nations Institute on Criminal Justice) CSD and its subsidiary social research company, Vitosha Research, have been conducting the National Crime Survey annually since 2005. Before that surveys were done in 1997, 2001, and 2004. While the core of the survey is still the methodology developed by UNICRI, the survey has been developed and enriched with additional questions that reflect the specifics of crime situation in Bulgaria. The NCS is presented annually as part of the regular meetings of the National Crime Prevention Council.