An estimated 3 % of the global population, or 185 million people consume illicit drugs annually. Among this population are people from almost every country on earth and from every walk of life. In this first edition of the new two volume World Drug Report, UNODC presents more quantitative data than ever before in an effort to increase the amount of factual evidence available in a field which is so notoriously difficult to quantify. This year, the analysis of trends, some going back ten years or more, is presented in Volume 1. Detailed statistics are presented in Volume 2. Taken together these volumes will provide the most complete picture yet on today's illicit drug situation.