Percentages of Original Class Principal (or Class Notional) Balances and Weighted Average Lives Distribution Date 0% 5% 15% 25% 40% 0% 5% 15% 25% 40% 0% 5% 15% 25% 40% 0% 5% 15% 25% 40% Class A Class B Class C Class D CPR Prepayment Assumption Rates Initial Percent     . . . . . .   100   100    100    100    100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 May 2009  . . . . . . . . . 90 87 80 73 61 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 May 2010  . . . . . . . . . 78 66 44 22 0 100 100 100 100 87 100 100 100 100 100 100 100 100 100 100 May 2011  . . . . . . . . . 66 42 0 0 0 100 100 98 32 0 100 100 100 100 59 100 100 100 100 100 May 2012  . . . . . . . . . 56 20 0 0 0 100 100 33 0 0 100 100 100 62 0 100 100 100 100 91 May 2013  . . . . . . . . . 46 0 0 0 0 100 100 0 0 0 100 100 84 14 0 100 100 100 100 52 May 2014  . . . . . . . . . 37 0 0 0 0 100 70 0 0 0 100 100 47 0 0 100 100 100 78 24 May 2015  . . . . . . . . . 29 0 0 0 0 100 42 0 0 0 100 100 17 0 0 100 100 100 53 8 May 2016  . . . . . . . . . 21 0 0 0 0 100 17 0 0 0 100 100 0 0 0 100 100 92 34 0 May 2017  . . . . . . . . . 13 0 0 0 0 100 0 0 0 0 100 94 0 0 0 100 100 73 20 0 May 2018  . . . . . . . . . 6 0 0 0 0 100 0 0 0 0 100 76 0 0 0 100 100 57 10 0 May 2019  . . . . . . . . . 0 0 0 0 0 96 0 0 0 0 100 59 0 0 0 100 100 43 1 0 May 2020  . . . . . . . . . 0 0 0 0 0 81 0 0 0 0 100 43 0 0 0 100 100 31 0 0 May 2021  . . . . . . . . . 0 0 0 0 0 67 0 0 0 0 100 27 0 0 0 100 100 21 0 0 May 2022  . . . . . . . . . 0 0 0 0 0 52 0 0 0 0 100 13 0 0 0 100 100 13 0 0 May 2023  . . . . . . . . . 0 0 0 0 0 37 0 0 0 0 100 0 0 0 0 100 99 6 0 0 May 2024  . . . . . . . . . 0 0 0 0 0 21 0 0 0 0 100 0 0 0 0 100 87 0 0 0 May 2025  . . . . . . . . . 0 0 0 0 0 5 0 0 0 0 100 0 0 0 0 100 76 0 0 0 May 2026  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 90 0 0 0 0 100 64 0 0 0 May 2027  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 75 0 0 0 0 100 54 0 0 0 May 2028  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 62 0 0 0 0 100 44 0 0 0 May 2029  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 48 0 0 0 0 100 35 0 0 0 May 2030  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 34 0 0 0 0 100 27 0 0 0 May 2031  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 18 0 0 0 0 100 18 0 0 0 May 2032  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 100 10 0 0 0 May 2033  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 89 3 0 0 0 May 2034  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 75 0 0 0 0 May 2035  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 61 0 0 0 0 May 2036  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 47 0 0 0 0 May 2037  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 33 0 0 0 0 May 2038  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18 0 0 0 0 May 2039  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 0 0 0 0 May 2040  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2041  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2042  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2043  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2044  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2045  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2046  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2047  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 May 2048  . . . . . . . . . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Weighted Average Life (years). . . . . . .    4.9    2.7     1.7     1.4     1.1 14.1 6.8 3.7 2.8 2.2 20.8 11.7 6.0 4.3 3.1 27.8 19.7 10.9 7.5 5.3 S-19