(a) The cash principal of the mental health trust fund shall be retained perpetually in the fund for investment by the Alaska Permanent Fund Corporation, as specified in AS 37.13.300.
(b) The net income of the fund shall be transferred by the corporation to the mental health trust settlement income account at the end of each fiscal year.
(c) The net income of the fund may only be utilized by the Alaska Mental Health Trust Authority for the purposes listed in AS 37.14.041.