Decides also, as an ad hoc arrangement, taking into consideration the funding through voluntary contributions from the Government of Kuwait of the two-thirds share of the cost of the Observation Mission, equivalent to 33,525,000 dollars, to apportion among Member States the amount of 19,185,270 dollars gross (16,762,503 dollars net), representing one third of the cost of the maintenance of the Mission for the period from 1 July 2000 to 30 June 2001, the said amount to be apportioned at a monthly rate of 1,598,773 dollars gross (1,396,875 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, 50/451 B of 23 December 1995 and 54/456 to 54/458 of 23 December 1999, and taking into account the scale of assessments for the year 2000, as set out in its resolutions 52/215 A of 22 December 1997 and 54/237 A of 23 December 1999, and for the year 2001, subject to the review by the Security Council with regard to the question of termination or continuation of the Mission;