A/RES/51/234 Page 3 9. 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 33,066,200 dollars, to apportion among Member States the amount of 18,421,300 dollars gross (16,533,100 dollars net), representing one third of the cost of the maintenance of the Observation Mission for the period from 1 July 1997 to 30 June 1998, the said amount to be assessed at a monthly rate of 1,535,108 dollars gross (1,377,758 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 and 51/218 A and B of 18 December 1996 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 for the year 1998,4 subject to the review by the Security Council with regard to the question of termination or continuation of the Observation Mission; 10. Decides further that, in accordance with the provisions of its resolution 973 (X) of 15 December 1955, there shall be set off against the apportionment among Member States, as provided for in paragraph 9 above, their respective share in the Tax Equalization Fund of the estimated staff assessment income of 1,888,200 dollars approved for the period from 1 July 1997 to 30 June 1998; 11. Decides that, 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, for Member States that have fulfilled their financial obligations to the Mission, there shall be set off against the apportionment, as provided for in paragraph 9 above, their respective share in the unencumbered balance of 1,723,200 dollars gross (1,440,000 dollars net), representing one third of the unencumbered balance of 4,603,200 dollars gross (4,320,000 dollars net) in respect of the period from 1 January to 30 June 1996; 12. Decides also that, for Member States that have not fulfilled their financial obligations to the Observation Mission, their share of the unencumbered balance of 1,723,200 dollars gross (1,440,000 dollars net) for the period from 1 January to 30 June 1996 shall be set off against their outstanding obligations; 13. Decides further that two thirds of the net unencumbered balance of 4,320,000 dollars, equivalent to 2,880,000 dollars, shall be returned to the Government of Kuwait; 14. Requests the Secretary-General to continue his efforts to recover the overpayment of mission subsistence allowance in the estimated amount of 988,443.5 dollars and to report to the General Assembly at its fifty-second session on the results of action taken for its recovery, including measures taken with respect to those responsible for the overpayment; 15. Invites voluntary contributions to the Observation Mission in cash and in the form of services and supplies acceptable to the Secretary-General, to be administered, as appropriate, in accordance with the procedure and practices established by the General Assembly; 4 To be adopted by the General Assembly. /...