The permanent school fund of the state shall consist of the proceeds of sales of Sections Two, Sixteen, Thirty-Two and Thirty-Six in each township of the state, or the lands selected in lieu thereof; the proceeds of sales of all lands that have been or may hereafter be granted to the state not otherwise appropriated by the terms and conditions of the grant; such portion of the proceeds of sales of land of the United States within the state as has been or may be granted by congress; all earnings, including interest, dividends and capital gains from investment of the permanent school fund; also all other grants, gifts and devises made to the state, the purpose of which is not otherwise specified. (As amended November 5, 1996.)