| Belgium | | Police reports or registrations of offences related to illicit drugs. |
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| Bulgaria | | Police reports of arrests for drugs and precursors related law offences. |
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| Czech Republic | | Persons prosecuted for primary drug related crime according to Penal Code and Drug-related misdemeanours. |
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| Denmark | | Police reports of drug offences/cases registered for violation of drug laws. |
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| Germany | | Registered cases (based on complaints) of offences against the Narcotic Drug Law. |
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| Estonia | | Persons reported for offences against the drug legislation |
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| Ireland | | Drug offences where criminal proceedings commenced |
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| Greece | | Prosecuted persons by any authority (Police, Coast Guard, Customs, Greek Financial and Economic Crimes Office) for any drug law offence. |
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| Spain | | Initial reports of arrests submitted by National Police Corps, Civil Guard and Customs in case of dealing/trafficking (criminal offences) and reports in case of possession/use in public places (administrative offences). |
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| France | | Police reports of Infractions and drug law offences. |
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| Italy | | Reports of drug law offences: persons referred to the Judicial Authority (criminal offences) and persons referred to the Prefect of the police force (administrative offences). |
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| Cyprus | | Police reports of official charges against the drug legislation. |
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| Latvia | | Reports of criminal procedures and administrative violations for drug law offences. |
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| Lithuania | | Police reports of investigated case for drug law offences. |
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| Luxembourg | | Reports of presumed offences against the 1973 drug law. |
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| Hungary | | Charges for indictable drug law offences (i.e. cases of drug abuse reported by police and prosecutors at the end of criminal investigations). |
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| Malta | | Police reports of persons arrested for drug law offences. |
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| Netherlands | | Offences against the Opium Act considered in need of Prosecution Department. |
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| Austria | | Police reports for violations of the Narcotic Substances Act. |
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| Poland | | Police reports of offences against Drug Law 2005. |
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| Portugal | | Presumed offenders questioned by the police for drug-related offences (criminal offences) and suspected drug users referred to the Commission for the Dissuasion of Drug Use (CDT) (administrative offences). |
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| Romania | | Reports of convicted persons under/against national drug legislation (Law no.143/2000). |
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| Slovenia | | Presumed offences against drug legislations. |
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| Slovakia | | Reports of convicted offenders; persons charged for drug law offences. |
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| Finland | | Reports of offences against the Penal Code and Persons suspected of offences under the Penal Code. |
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| Sweden | | Total number of reported drug offences. |
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| United Kingdom | | Persons found guilty, cautioned, given a fiscal fine or dealt with by compounding for drug law offences. |
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| Croatia | | Police reports, before charges, of criminal drug law offences against Criminal Code, Article 173. |
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| Turkey | | Offences brought up by the main law enforcement authorities (police, Gendarmerie, customs) for drug law offences. |
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| Norway | | Police reports of offences against General Civil Penal Code and Act on Medicinal Products. |
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