2.2.3 The JICS reports that the sentenced offender population has also decreased dramatically: in November 2004 the population peaked at just over 137 600 offenders, and by the end of March 2010 that number stood at approximately 114 280 offenders. The burgeoning number of offenders serving long sentences is a matter of grave concern as it is likely to impact on conditions of incarceration and the DCS' rehabilitation efforts. While the impact of the dramatic growth on conditions of incarceration, overcrowding and the treatment and safety of detainees is matter of speculation, the JICS believes that detailed research and monitoring of its impact on the rehabilitation and reintegration of offenders should be done.