§ 86. Catastrophe surplus and reserves for workers' compensation. Ten per centum of the premiums collected from employers insured in the fund for workers' compensation shall be set aside for the creation of a surplus until such surplus shall amount to the sum of one hundred thousand dollars, and thereafter five per centum of such premiums, until such time as in the judgment of the commissioners such surplus shall be sufficiently large to cover the catastrophe hazard. Thereafter the contribution to such surplus may be reduced or discontinued conditional upon constant maintenance of a sufficient surplus to cover the catastrophe hazard. Reserves shall be set up and maintained adequate to meet anticipated losses and carry all claims and policies to maturity, which reserves shall be computed to reflect the present values, at five percent interest per annum, of the determined and estimated unpaid losses, and other requirements computed in accordance with such rules as shall be approved by the superintendent of financial services.