The net estimated staff assessment income of 2,579,300 dollars, comprising the amount of 2,535,200 dollars for the period from 1 July 2006 to 30 June 2007 and the increase of 44,100 dollars in respect of the financial period ended 30 June 2005, to be set off against the balance referred to in subparagraph (b) above, to be prorated among the budgets of the individual active peacekeeping operations;