The statistics relate to offences involving the illegal importation, cultivation, supply or possession of drugs. Other offences may be drug related, such as those committed to fund a drug habit, but these cannot be separately identified within the statistics held centrally.The statistics dealing with recorded crime and court proceedings are not directly comparable as a person may be proceeded against for more than one crime involving more than one victim, and a crime may be recorded in one year and proceedings taken in a subsequent year.