That rise had several causes, among them the greater number of people imprisoned for non-violent crimes and the heavier sentences that came with new laws laying down mandatoryminimum terms.
Hackers who breach and cause substantial harm to critical infrastructure systems would face a mandatoryminimum three-year prison sentence if the White House gets its way.
Schools offer a series of vocational-technical and university preparatory tracks involving one to three additional years of education beyond the minimummandatory level.