A conviction shown on direct or collateral review or at the hearing to be invalid or for which the offender has been pardoned on the ground of innocence must be disregarded for purposes of subdivision c. In support of findings under subdivision b, it may be shown that the offender has had control of income or property not explained as derived from a source other than criminal activity. For purposes of subdivision b, a substantial source of income means a source of income which for any period of one year or more exceeds the minimum wage, determined on the basis of a forty-hour week and a fifty-week year, without reference to exceptions, under section 6(a)(1) of the Fair Labor Standards Act of 1938, as amended, for an employee engaged in commerce or in the production of goods for commerce, and which for the same period exceeds fifty percent of the offender's declared adjusted gross income under chapter 57-38.
N.D.C.C. § 12.1-32-09