[§707-783]  Additional sentencing considerations; victims held in servitude.  In addition to the factors set forth in sections 706-606 and 706-621, when determining the particular sentence to be imposed on a defendant convicted under section 707-781 or 707‑782, the court shall consider:

     (a)  The time for which the victim was held in servitude; and

     (b)  The number of victims involved in the offense for which the defendant is convicted. [L 2011, c 146, pt of §1]