then no earnings of those investments, including capital gains, if any, as such earnings accrue and are received, may be disbursed by the trustee to the seller or the designee of the seller which would reduce the corpus of the trust fund below 100 percent of the required value of the trust. Earnings in excess of 100 percent of the required value of the trust or 125 percent of the total trust liability, whichever is appropriate, may be distributed annually.
NRS 689.325