| 评级 | S&P | Moody | Fitch |
| AAA | 0.0037 | 0.0037 | 0.0037 |
| AA+ | 0.0033 | 0.0032 | 0.0040 |
| AA | 0.0030 | 0.0029 | 0.0021 |
| AA- | 0.0022 | 0.0025 | 0.0017 |
| A+ | 0.0038 | 0.0032 | 0.0022 |
| A | 0.0035 | 0.0033 | 0.0090 |
| A- | 0.0029 | 0.0043 | 0.0030 |
| BBB+ | 0.0040 | 0.0032 | 0.0037 |
| BBB | 0.0035 | 0.0033 | 0.0046 |
| BBB- | 0.0046 | 0.0051 | 0.0065 |
| |
| 0.0040 | 0.0103 |