Decides to appropriate to the Special Account for the United Nations Mission of Observers in Tajikistan the amount of 18,708,926 dollars gross (17,475,926 dollars net) for the maintenance of the Mission of Observers for the period from 1 July 1999 to 30 June 2000, inclusive of the amount of 930,639 dollars for the support account for peacekeeping operations and the amount of 182,487 dollars for the United Nations Logistics Base at Brindisi, Italy, for the period from 1 July 1999 to 30 June 2000, to be apportioned, as an ad hoc arrangement, among Member States at a monthly rate of 1,559,077 dollars gross (1,456,327 dollars net) 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 years 1999 and 2000, as set out in its resolution 52/215 A of 22 December 1997, subject to the decision of the Security Council to extend the mandate of the Mission of Observers beyond 30 June 1999;