However, it is possible to make use of separate data collected by the Home Office to estimate the proportion of convictions involving different types of drug and offence at Scotland level, and the proportion of all drug convictions by type of drug at force level.Persons with a Charge Proved for Drug Offences1 in Scottish Courts, by Type of Offence and Police Force Area, 1999-2003 Police Force Area Supply and Trafficking3 Possession Number % of all Drug Convictions Number % of all Drug Convictions Central 1999 84 32 174 67 2000 64 27 170 72 2001 100 29 242 71 2002 89 24 284 76 20032 119 26...