Decides also, as an ad hoc arrangement, to apportion the additional amount of 20 million dollars gross (20,369,600 dollars net) for the period from 1 July 1997 to 30 June 1998 among Member States, taking into account the amount of 155 million dollars gross (150,371,600 dollars net) already authorized under the terms of General Assembly resolution 52/8 A, in accordance with the composition of groups set out in paragraphs 3 and 4 of its resolution 43/232 of 1 March 1989, as adjusted by the Assembly in its resolutions 44/192 B of 21 December 1989, 45/269 of 27 August 1991, 46/198 A of 20 December 1991, 47/218 A of 23 December 1992, 49/249 A of 20 July 1995, 49/249 B of 14 September 1995, 50/224 of 11 April 1996, 51/218 A to C of 18 December 1996 and 52/230 of 31 March 1998 and its decisions 48/472 A of 23 December 1993 and 50/451 B of 23 December 1995, and taking into account the scale of assessments for the year 1997, as set out in its resolution 49/19 B of 23 December 1994 and its decision 50/471 A of 23 December 1995, and the scale of assessments for the year 1998, as set out in its resolution 52/215 A of 22 December 1997, and subject to the decision of the Security Council to extend the mandate of the Observer Mission beyond 30 April 1998;