Security Group 9
PSA Prepayment Assumption Rates
Distribution Date
Classes EN, FN, NA, NE, NF, NG, NH,
NI, NJ, NK, NL, NM, NT, NU, NV, NX
and SN
0%
290%
500%
530%
1000%
Class NB
0%
290%
500%
530%
1000%
Class NC
0%
290%
500%
530%
1000%
Initial Percent .................. 100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
June 2004 ..........................
98
92
92
92
92
100
100
100
100
100
100
100
100
100
0
June 2005 ..........................
95
76
76
76
63
100
100
100
100
100
100
100
100
100
0
June 2006 ..........................
92
56
56
56
22
100
100
100
100
100
100
100
0
0
0
June 2007 ..........................
90
38
38
38
5
100
100
100
100
100
100
100
0
0
0
June 2008 ..........................
87
24
24
24
0
100
100
100
100
78
100
100
0
0
0
June 2009 ..........................
83
14
14
14
0
100
100
100
100
31
100
100
0
0
0
June 2010 ..........................
80
8
8
8
0
100
100
100
100
12
100
100
0
0
0
June 2011 ..........................
76
3
3
3
0
100
100
100
100
5
100
100
0
0
0
June 2012 ..........................
73
0
0
0
0
100
100
100
100
2
100
100
0
0
0
June 2013 ..........................
68
0
0
0
0
100
70
70
70
1
100
100
0
0
0
June 2014 ..........................
64
0
0
0
0
100
47
47
47
0
100
84
0
0
0
June 2015 ..........................
60
0
0
0
0
100
31
31
31
0
100
30
0
0
0
June 2016 ..........................
55
0
0
0
0
100
20
20
20
0
100
0
0
0
0
June 2017 ..........................
50
0
0
0
0
100
13
13
13
0
100
0
0
0
0
June 2018 ..........................
44
0
0
0
0
100
9
9
9
0
100
0
0
0
0
June 2019 ..........................
38
0
0
0
0
100
6
6
6
0
100
0
0
0
0
June 2020 ..........................
32
0
0
0
0
100
4
4
4
0
100
0
0
0
0
June 2021 ..........................
25
0
0
0
0
100
2
2
2
0
100
0
0
0
0
June 2022 ..........................
18
0
0
0
0
100
2
2
2
0
100
0
0
0
0
June 2023 ..........................
11
0
0
0
0
100
1
1
1
0
100
0
0
0
0
June 2024 ..........................
3
0
0
0
0
100
1
1
1
0
100
0
0
0
0
June 2025 ..........................
0
0
0
0
0
7
0
0
0
0
100
0
0
0
0
June 2026 ..........................
0
0
0
0
0
0
0
0
0
0
100
0
0
0
0
June 2027 ..........................
0
0
0
0
0
0
0
0
0
0
100
0
0
0
0
June 2028 ..........................
0
0
0
0
0
0
0
0
0
0
100
0
0
0
0
June 2029 ..........................
0
0
0
0
0
0
0
0
0
0
100
0
0
0
0
June 2030 ..........................
0
0
0
0
0
0
0
0
0
0
100
0
0
0
0
June 2031 ..........................
0
0
0
0
0
0
0
0
0
0
100
0
0
0
0
June 2032 ..........................
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
June 2033 ..........................
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Weighted Average
Life (years) .................. 12.9
3.6
3.6
3.6
2.4
21.7
11.6
11.6
11.6
5.8
28.7
11.6
2.5
2.2
0.4
PSA Prepayment Assumption Rates
Class ND
Class ZN
Distribution Date
0%
290%
500%
530%
1000%
0%
290%
500%
530%
1000%
Initial Percent .................. 100
100
100
100
100
100
100
100
100
100
June 2004 .......................... 100
100
100
100
50
105
100
74
70
70
June 2005 .......................... 100
100
100
100
0
110
100
15
3
0
June 2006 .......................... 100
100
78
49
0
116
100
0
0
0
June 2007 .......................... 100
100
37
6
0
122
100
0
0
0
June 2008 .......................... 100
100
29
0
0
128
99
0
0
0
June 2009 .......................... 100
100
25
0
0
135
89
0
0
0
June 2010 .......................... 100
100
21
0
0
142
71
0
0
0
June 2011 .......................... 100
100
16
0
0
149
52
0
0
0
June 2012 .......................... 100
100
13
0
0
157
31
0
0
0
June 2013 .......................... 100
100
10
0
0
165
13
0
0
0
June 2014 .......................... 100
100
7
0
0
173
0
0
0
0
June 2015 .......................... 100
100
5
0
0
182
0
0
0
0
June 2016 .......................... 100
93
4
0
0
191
0
0
0
0
June 2017 .......................... 100
75
3
0
0
201
0
0
0
0
June 2018 .......................... 100
61
2
0
0
211
0
0
0
0
June 2019 .......................... 100
49
1
0
0
222
0
0
0
0
June 2020 .......................... 100
39
1
0
0
234
0
0
0
0
June 2021 .......................... 100
30
1
0
0
246
0
0
0
0
June 2022 .......................... 100
24
0
0
0
258
0
0
0
0
June 2023 .......................... 100
18
0
0
0
271
0
0
0
0
June 2024 .......................... 100
14
0
0
0
285
0
0
0
0
June 2025 .......................... 100
11
0
0
0
300
0
0
0
0
June 2026 .......................... 100
8
0
0
0
263
0
0
0
0
June 2027 .......................... 100
6
0
0
0
222
0
0
0
0
June 2028 .......................... 100
4
0
0
0
178
0
0
0
0
June 2029 .......................... 100
3
0
0
0
131
0
0
0
0
June 2030 .......................... 100
2
0
0
0
80
0
0
0
0
June 2031 .......................... 100
1
0
0
0
27
0
0
0
0
June 2032 ..........................
96
0
0
0
0
0
0
0
0
0
June 2033 ..........................
0
0
0
0
0
0
0
0
0
0
Weighted Average
Life (years) .................. 29.5
16.9
5.1
3.1
1.0
25.5
8.1
1.4
1.3
1.2
S-31