The European Monitoring Centre (EMCDDA) 2004 Review of Drug Consumption Rooms calculated the number of lives saved for all 25 drug consumption rooms across Germany. It calculated from known overdose mortality rates per 100 dependent heroin users (2%) and the number of injections per 100 person years per dependent heroin user (1,000 injections per year per user). Their calculation indicated that 100 dependent heroin users, cumulatively injecting 100,000 times a year, would statistically have 2 overdose fatalities annually. Thus 500,000 injections results in 10 expected fatalities averted by the entirety of injecting facilities across Germany.