Decides further, as an ad hoc arrangement, taking into account the amount of 15,091,000 dollars gross (14,478,400 dollars net) already apportioned in accordance with its resolution 51/15 B, to apportion among Member States the additional amount of 13,227,900 dollars gross (12,602,500 dollars net) for the period from 1 July 1997 to 30 June 1998, in accordance with the composition of groups set out in paragraphs 3 and 4 of General Assembly 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 year 1998, as set out in its resolution 52/215 A of 22 December 1997;