Fig. 1From: The impact of Taiwan’s implementation of a nationwide harm reduction program in 2006 on the use of various illicit drugs: trend analysis of first-time offenders from 2001 to 2017Yearly age-standardized first-time offense rate from 2001 to 2017 for five hierarchically classified kinds of illicit drugs, including heroin, methamphetamine, ecstasy, ketamine (CRPS, i.e., Criminal Record Processing System), and ketamine (ASP, i.e., Administrative Penalty System) in Taiwan from 2001 to 2017Back to article page