S-18 Percentages of Original Class Principal (or Class Notional) Balances and Weighted Average Lives PSA Prepayment Assumption Rates Classes AB, AI, AN, AU, AW and AY Classes AD, EA, ED, EH, EI and EK Classes AF, AS, BF, CF, DF, EF, IT, SA, SB, TB and TI Distribution Date 0% 100% 200% 350% 500% 0% 100% 200% 350% 500% 0% 100% 200% 350% 500% Initial Percent    . . . . . . . . 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 January 2009   . . . . . . . . . 99 96 95 92 89 99 96 94 91 87 99 97 95 93 90 January 2010   . . . . . . . . . 97 90 85 76 68 97 89 82 71 61 98 92 87 79 71 January 2011   . . . . . . . . . 95 83 72 57 44 96 81 67 49 32 97 85 75 62 49 January 2012   . . . . . . . . . 94 76 61 42 27 94 72 54 31 12 96 79 65 48 34 January 2013   . . . . . . . . . 92 69 51 30 15 93 64 42 16 0 95 73 57 37 23 January 2014   . . . . . . . . . 90 62 42 20 6 91 57 32 5 0 93 68 49 29 16 January 2015   . . . . . . . . . 87 56 34 12 0 89 50 23 0 0 92 62 42 22 11 January 2016   . . . . . . . . . 85 50 27 6 0 87 43 15 0 0 90 58 36 17 8 January 2017   . . . . . . . . . 83 44 21 1 0 85 37 9 0 0 89 53 31 13 5 January 2018   . . . . . . . . . 80 39 15 0 0 82 31 3 0 0 87 49 27 10 4 January 2019   . . . . . . . . . 77 33 10 0 0 80 26 0 0 0 85 45 23 8 2 January 2020   . . . . . . . . . 74 28 6 0 0 77 21 0 0 0 83 41 20 6 2 January 2021   . . . . . . . . . 71 24 2 0 0 74 16 0 0 0 80 37 17 5 1 January 2022   . . . . . . . . . 67 19 0 0 0 71 12 0 0 0 78 34 14 4 1 January 2023   . . . . . . . . . 63 15 0 0 0 67 7 0 0 0 75 30 12 3 1 January 2024   . . . . . . . . . 59 10 0 0 0 63 3 0 0 0 73 27 10 2 0 January 2025   . . . . . . . . . 55 6 0 0 0 59 0 0 0 0 70 25 9 2 0 January 2026   . . . . . . . . . 50 2 0 0 0 55 0 0 0 0 66 22 7 1 0 January 2027   . . . . . . . . . 45 0 0 0 0 50 0 0 0 0 63 19 6 1 0 January 2028   . . . . . . . . . 40 0 0 0 0 45 0 0 0 0 59 17 5 1 0 January 2029   . . . . . . . . . 34 0 0 0 0 40 0 0 0 0 55 15 4 0 0 January 2030   . . . . . . . . . 28 0 0 0 0 34 0 0 0 0 50 13 3 0 0 January 2031   . . . . . . . . . 21 0 0 0 0 27 0 0 0 0 46 11 3 0 0 January 2032   . . . . . . . . . 14 0 0 0 0 21 0 0 0 0 40 9 2 0 0 January 2033   . . . . . . . . . 6 0 0 0 0 13 0 0 0 0 35 7 1 0 0 January 2034   . . . . . . . . . 0 0 0 0 0 5 0 0 0 0 29 5 1 0 0 January 2035   . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 22 4 1 0 0 January 2036   . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 16 2 0 0 0 January 2037   . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 8 1 0 0 0 January 2038   . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Weighted Average Life (years) . . . . . . . . . 16.6 8.5 5.7 3.9 3.0 17.5 7.6 4.7 3.1 2.4 20.2 11.3 7.6 4.9 3.7 PSA Prepayment Assumption Rates Classes AP, PA, PC, PD, PE and PI Class BG Classes BI and CI Distribution Date 0% 100% 200% 350% 500% 0% 100% 200% 350% 500% 0% 100% 200% 350% 500% Initial Percent    . . . . . . . . 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 January 2009   . . . . . . . . . 98 94 94 94 94 100 100 100 100 100 99 96 94 91 88 January 2010   . . . . . . . . . 96 84 84 84 84 100 100 100 100 100 97 90 83 74 64 January 2011   . . . . . . . . . 94 71 71 71 71 100 100 100 100 100 96 82 70 53 38 January 2012   . . . . . . . . . 92 59 59 59 49 100 100 100 100 100 95 74 57 36 19 January 2013   . . . . . . . . . 89 47 47 47 29 100 100 100 100 100 93 67 46 23 6 January 2014   . . . . . . . . . 87 37 37 37 14 100 100 100 100 100 91 60 37 12 1 January 2015   . . . . . . . . . 84 26 26 26 4 100 100 100 100 100 89 53 29 5 0 January 2016   . . . . . . . . . 81 17 17 17 0 100 100 100 100 50 87 47 21 1 0 January 2017   . . . . . . . . . 78 9 9 9 0 100 100 100 100 0 85 41 15 0 0 January 2018   . . . . . . . . . 74 3 3 3 0 100 100 100 100 0 83 36 10 0 0 January 2019   . . . . . . . . . 70 0 0 0 0 100 100 100 59 0 80 31 5 0 0 January 2020   . . . . . . . . . 66 0 0 0 0 100 100 100 10 0 77 26 2 0 0 January 2021   . . . . . . . . . 62 0 0 0 0 100 100 100 0 0 74 21 0 0 0 January 2022   . . . . . . . . . 57 0 0 0 0 100 100 100 0 0 71 17 0 0 0 January 2023   . . . . . . . . . 52 0 0 0 0 100 100 100 0 0 68 13 0 0 0 January 2024   . . . . . . . . . 46 0 0 0 0 100 100 100 0 0 64 9 0 0 0 January 2025   . . . . . . . . . 40 0 0 0 0 100 100 76 0 0 60 5 0 0 0 January 2026   . . . . . . . . . 34 0 0 0 0 100 100 38 0 0 56 3 0 0 0 January 2027   . . . . . . . . . 27 0 0 0 0 100 100 5 0 0 51 1 0 0 0 January 2028   . . . . . . . . . 19 0 0 0 0 100 100 0 0 0 47 0 0 0 0 January 2029   . . . . . . . . . 11 0 0 0 0 100 100 0 0 0 41 0 0 0 0 January 2030   . . . . . . . . . 2 0 0 0 0 100 100 0 0 0 36 0 0 0 0 January 2031   . . . . . . . . . 0 0 0 0 0 100 100 0 0 0 29 0 0 0 0 January 2032   . . . . . . . . . 0 0 0 0 0 100 83 0 0 0 23 0 0 0 0 January 2033   . . . . . . . . . 0 0 0 0 0 100 37 0 0 0 16 0 0 0 0 January 2034   . . . . . . . . . 0 0 0 0 0 100 0 0 0 0 8 0 0 0 0 January 2035   . . . . . . . . . 0 0 0 0 0 100 0 0 0 0 3 0 0 0 0 January 2036   . . . . . . . . . 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 January 2037   . . . . . . . . . 0 0 0 0 0 62 0 0 0 0 0 0 0 0 0 January 2038   . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Weighted Average Life (years) . . . . . . . . . 14.1 5.0 5.0 5.0 4.0 29.1 24.7 17.7 11.2 8.0 17.7 8.2 5.2 3.5 2.7