To illustrate how different offense classes consume resources, SPAC analyzed the data for the average number of exits in each class for 2015, 2016, and 2017. Each figure represents 100 offenders. Resources consumed are expressed in bed-years and dollars. The true per capita cost for housing one inmate for one year, including all benefits and pension costs, is $44,704. The true cost is multiplied by the bed-years consumed by the entire offense class. The larger the figure, the longer the average stay and the greater the magnitude of resources used. The figures are scaled such that the area for each class represents proportionally the resources required for that group.