http://www.unodc.org/pdf/WDR_2005/volume_2_web.pdf
http://www.unodc.org/pdf/research/wdr_volume2_fr.pdf
http://www.unodc.org/pdf/research/wdr_volume2_sp.pdf

It provides one of the most comprehensive overviews of illicit drug trends at the international level. In addition, this year it presents the work of UNODC in two new areas of research. Both aim to provide tools to enrich our understanding of an immensely complex situation: an estimate of the financial value of the world drug market, and the preliminary steps towards the creation of an illicit drug index. The analysis of trends, some going back 10 years or more, is presented in Analysis. Document in PDF, required Acrobat Reader.