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Muni Bonds by Maturity ($3,871,310,641)

Asset Class |
5/27/07 |
8/15/07 |
11/15/07 |
1/31/08 |
4/26/08 |
6/30/08 |
9/26/08 |
Short Term |
27.8% |
28.2% |
30.0% |
29.9% |
31.3% |
32.0% |
33.8% |
Medium Term |
30.2% |
30.6% |
29.5% |
29.3% |
28.3% |
28.6% |
28.2% |
Long Term |
41.9% |
41.2% |
40.5% |
40.9% |
40.4% |
39.4% |
38.0% |
Asset Class |
Change from |
5/27 to 8/15 |
8/15 to 11/15 |
11/15 to 1/31 |
1/31 to 4/26 |
4/26 to 6/30 |
6/30 to 9/26 |
Short Term |
0.4% |
1.8% |
-0.1% |
1.4% |
0.7% |
1.8% |
Medium Term |
0.4% |
-1.1% |
-0.2% |
-0.9% |
0.3% |
-0.4% |
Long Term |
-0.7% |
-0.7% |
0.4% |
-0.5% |
-1.0% |
-1.4% |
Muni Bonds by Quality ($3,871,310,641)

Asset Class |
5/27/07 |
8/15/07 |
11/15/07 |
1/31/08 |
4/26/08 |
6/30/08 |
9/26/08 |
Investment Grade |
82.0% |
83.7% |
85.5% |
85.0% |
79.5% |
79.8% |
80.3% |
Medium Grade |
11.7% |
10.7% |
10.0% |
9.5% |
15.5% |
15.0% |
14.3% |
High Yield |
6.3% |
5.6% |
4.5% |
5.5% |
5.0% |
5.2% |
5.4% |
Asset Class |
Change from |
5/27 to 8/15 |
8/15 to 11/15 |
11/15 to 1/31 |
1/31 to 4/26 |
4/26 to 6/30 |
6/30 to 9/26 |
Investment Grade |
1.7% |
1.8% |
-0.5% |
-5.5% |
0.3% |
0.5% |
Medium Grade |
-1.0% |
-0.7% |
-0.5% |
6.0% |
-0.5% |
-0.7% |
High Yield |
-0.7% |
-1.1% |
1.0% |
-0.5% |
0.2% |
0.2% |
Muni Bonds by Maturity/Quality ($3,871,310,641)

Asset Class |
5/27/07 |
8/15/07 |
11/15/07 |
1/31/08 |
4/26/08 |
6/30/08 |
9/26/08 |
Short Term Investment Grade |
23.6% |
24.1% |
25.1% |
25.1% |
24.6% |
25.6% |
27.5% |
Short Term Medium Grade |
4.2% |
4.2% |
5.0% |
4.7% |
6.6% |
6.5% |
6.3% |
Medium Term Investment Grade |
25.6% |
26.4% |
26.5% |
26.2% |
23.8% |
24.4% |
24.2% |
Medium Term Medium Grade |
4.6% |
4.2% |
3.0% |
3.0% |
4.5% |
4.1% |
3.9% |
Long Term Investment Grade |
32.8% |
33.2% |
34.0% |
33.6% |
31.0% |
29.8% |
28.6% |
Long Term Medium Grade |
2.9% |
2.4% |
2.0% |
1.7% |
4.4% |
4.4% |
4.0% |
Long Term High Yield |
6.3% |
5.6% |
4.5% |
5.5% |
5.0% |
5.2% |
5.4% |
Asset Class |
Change from |
5/27 to 8/15 |
8/15 to 11/15 |
11/15 to 1/31 |
1/31 to 4/26 |
4/26 to 6/30 |
6/30 to 9/26 |
Short Term Investment Grade |
0.5% |
1.0% |
0.0% |
-0.5% |
1.0% |
1.9% |
Short Term Medium Grade |
0.0% |
0.8% |
-0.3% |
1.9% |
-0.1% |
-0.2% |
Medium Term Investment Grade |
0.8% |
0.1% |
-0.3% |
-2.4% |
0.6% |
-0.2% |
Medium Term Medium Grade |
-0.4% |
-1.2% |
0.0% |
1.5% |
-0.4% |
-0.2% |
Long Term Investment Grade |
0.4% |
0.8% |
-0.4% |
-2.6% |
-1.2% |
-1.2% |
Long Term Medium Grade |
-0.5% |
-0.4% |
-0.3% |
2.6% |
0.0% |
-0.4% |
Long Term High Yield |
-0.7% |
-1.1% |
1.0% |
-0.5% |
0.2% |
0.2% |
Foreign Bonds by Maturity ($200,886,982)
Asset Class |
5/27/07 |
8/15/07 |
11/15/07 |
1/31/08 |
4/26/08 |
6/30/08 |
9/26/08 |
Short Term |
19.2% |
14.8% |
18.1% |
25.3% |
25.9% |
21.6% |
14.6% |
Medium Term |
59.2% |
68.8% |
63.5% |
67.5% |
65.6% |
70.4% |
76.0% |
Long Term |
21.6% |
16.4% |
18.4% |
7.3% |
8.4% |
8.0% |
9.4% |
Asset Class |
Change from |
5/27 to 8/15 |
8/15 to 11/15 |
11/15 to 1/31 |
1/31 to 4/26 |
4/26 to 6/30 |
6/30 to 9/26 |
Short Term |
-4.4% |
3.3% |
7.2% |
0.7% |
-4.3% |
-7.0% |
Medium Term |
9.6% |
-5.3% |
4.0% |
-1.8% |
4.8% |
5.6% |
Long Term |
-5.2% |
2.0% |
-11.1% |
1.1% |
-0.4% |
1.4% |
Foreign Bonds by Quality ($200,886,982)

Asset Class |
5/27/07 |
8/15/07 |
11/15/07 |
1/31/08 |
4/26/08 |
6/30/08 |
9/26/08 |
Investment Grade |
64.1% |
75.4% |
77.5% |
87.7% |
87.9% |
86.6% |
85.7% |
Medium Grade |
28.4% |
13.4% |
10.4% |
9.4% |
8.4% |
9.9% |
10.2% |
High Yield |
7.5% |
11.3% |
12.0% |
2.9% |
3.8% |
3.6% |
4.1% |
Asset Class |
Change from |
5/27 to 8/15 |
8/15 to 11/15 |
11/15 to 1/31 |
1/31 to 4/26 |
4/26 to 6/30 |
6/30 to 9/26 |
Investment Grade |
11.3% |
2.1% |
10.2% |
0.1% |
-1.3% |
-0.9% |
Medium Grade |
-15.0% |
-3.0% |
-1.0% |
-1.0% |
1.5% |
0.3% |
High Yield |
3.8% |
0.7% |
-9.2% |
0.9% |
-0.2% |
0.5% |
Foreign Bonds by Maturity/Quality ($200,886,982)

Asset Class |
5/27/07 |
8/15/07 |
11/15/07 |
1/31/08 |
4/26/08 |
6/30/08 |
9/26/08 |
Short Term Investment Grade |
19.2% |
14.8% |
18.1% |
25.3% |
25.9% |
21.6% |
14.6% |
Medium Term Investment Grade |
33.7% |
57.5% |
53.1% |
58.4% |
57.7% |
60.8% |
66.1% |
Medium Term Medium Grade |
25.4% |
11.2% |
10.3% |
9.1% |
7.9% |
9.6% |
10.0% |
Long Term Investment Grade |
11.1% |
3.0% |
6.2% |
4.1% |
4.2% |
4.2% |
5.0% |
Long Term Medium Grade |
2.9% |
2.2% |
0.1% |
0.3% |
0.4% |
0.2% |
0.2% |
Long Term High Yield |
7.5% |
11.3% |
12.0% |
2.9% |
3.8% |
3.6% |
4.1% |
Asset Class |
Change from |
5/27 to 8/15 |
8/15 to 11/15 |
11/15 to 1/31 |
1/31 to 4/26 |
4/26 to 6/30 |
6/30 to 9/26 |
Short Term Investment Grade |
-4.4% |
3.3% |
7.2% |
0.7% |
-4.3% |
-7.0% |
Medium Term Investment Grade |
23.8% |
-4.4% |
5.3% |
-0.6% |
3.1% |
5.3% |
Medium Term Medium Grade |
-14.2% |
-0.9% |
-1.2% |
-1.2% |
1.7% |
0.4% |
Long Term Investment Grade |
-8.1% |
3.2% |
-2.1% |
0.1% |
0.0% |
0.8% |
Long Term Medium Grade |
-0.7% |
-2.1% |
0.2% |
0.2% |
-0.2% |
0.0% |
Long Term High Yield |
3.8% |
0.7% |
-9.2% |
0.9% |
-0.2% |
0.5% |
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