2. Knowledge of the NOI and its compilation is important for interpretation, as it relates to the counting preferences attributed to specific offence types. The offence of drug dealing or trafficking of non-commercial quantities, a charge often imposed for the possession of quantities greater than for personal use, is ranked 21 of 157 on the NOI—higher than aggravated robbery (NOI 24), common assault (NOI 28), and the trafficking of regulated weapons or explosives (NOI 47).