A/RES/51/154 Page 3 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 and 50/224 of 11 April 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, subject to the decision of the Security Council to extend the mandate of the Force beyond 31 May 1997; 10. Decides 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 additional staff assessment income of 757,800 dollars approved for the period from 1 July 1996 to 30 June 1997; 11. Invites voluntary contributions to the Force 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 established by the General Assembly in its resolutions 43/230 of 21 December 1988, 44/192 A of 21 December 1989 and 45/258 of 3 May 1991; 12. Decides to keep under review during its fifty-first session the agenda item entitled "Financing of the United Nations Preventive Deployment Force". 85th plenary meeting 16 December 1996