[["2007", "$ 253907"], ["2008", "1278"], ["2009", "654"], ["2010", "1833416"], ["2011", "338501"], ["thereafter", "1112253"], ["total cash obligations", "$ 3540009"], ["accreted value of the discount and premium of 3.00% ( 3.00 % ) notes and 7.125% ( 7.125 % ) notes", "3007"], ["balance as of december 31 2006", "$ 3543016"]]