Excess funds investments may be made in bonds, notes or other obligations issued, assumed or guaranteed by the International Bank for Reconstruction and Development, or the Inter-American Development Bank, or the Government Development Bank for Puerto Rico, or the Asian Development Bank, the International Finance Corporation, or the African Development Bank. Investments held under the authority of this section at any one time shall not be in excess of 21/2percent of the insurer’s admitted assets or an amount equal to 25 percent of the total of the capital

and surplus of such insurer, whichever is the lesser. Percentage or dollar value of assets and surplus as provided herein shall be determined by the insurer’s last preceding annual statement of conditions and affairs filed with the commissioner pursuant to law.