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 26 327 72 Dumfries and Galloway 1999 62 36 110 64 2000 44 34 86 66 2001 37 38 60 62 2002 47 35 86 65 20032 49 34 94 64 Fife 1999 109 37 186 63 2000 40 27 107 72 2001 72 45 88 55 2002 89 43 118 57 20032 86 49 88 51 Grampian 1999 153 23 501 76 2000 117 26 337 74 2001 116 19 496 81 2002 132 23 432 77 20032 155 21 588 79 Lothian and Borders 1999 205 26 591 74 2000 196 27 540 73 2001 198 26 577 74 2002 162 29 403 71 20032 202 34 385 66 Northern 1999 60 19 250 80 2000 43 16 222 83 2001 72 21 277 79 2002 65 17 318 83 20032 85 21 327 79 Strathclyde 1999 793 23 2,648 77 2000 698 23 2,285 77 2001 695 24 2,234 76 2002 640 21 2,407 79 20032 818 20 3,182 79 Tayside 1999 122 24 384 76 2000 116 25 352 75 2001 98 21 370 79 2002 129 25 391 75 20032 125 21 457 79 Scotland 1999 1,588 25 4,844 75 2000 1,318 24 4,099 76 2001 1,388 24 4,344 76 2002 1,353 23 4,439 77 20032 1,639 23 5,448 77 Notes:1.