| Rating | Year 1 | Year 5 | Year 10 | |
| UST | 10.0 |
0.00 | 0.00 | 0.00 |
| AAA | 9.5 |
0.00 | 0.10 | 0.44 |
| AA+ | 9.0 |
0.00 | 0.15 | 0.33 |
| AA | 8.5 |
0.00 | 0.15 | 0.85 |
| AA- | 8.0 |
0.02 | 0.51 | 1.07 |
| A+ | 7.5 |
0.05 | 0.63 | 1.60 |
| A | 7.0 |
0.04 | 0.42 | 1.72 |
| A- | 6.5 |
0.04 | 0.80 | 2.25 |
| BBB+ | 6.0 |
0.20 | 2.08 | 4.25 |
| BBB | 5.5 |
0.28 | 2.24 | 5.33 |
| BBB- | 5.0 |
0.36 | 4.52 | 8.36 |
| BB+ | 4.5 |
0.59 | 6.29 | 11.20 |
| BB | 4.0 |
0.87 | 9.43 | 16.81 |
| BB- | 3.5 |
1.62 | 14.16 | 23.57 |
| B+ | 3.0 |
2.86 | 19.93 | 28.97 |
| B | 2.5 |
7.78 | 27.91 | 34.93 |
| B- | 2.0 |
11.22 | 35.14 | 42.27 |
| CCC/C | 1.5-0.0 |
27.02 | 47.56 | 53.05 |
Statistics from Table 15, Cumulative Average Default Rates by Rating Modifier, 1981 to 2010(%), Page 18, Standard and Poor's "Annual 2007 Global Corporate Default Studyand Rating Transitions", January, 2010
To see Moody's default statistics go here:
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