Accreditation
Recent Credit Rating Results
| Rating Assignment Date | Long-term Issuer Rating | Outlook | News Release |
|---|---|---|---|
| March 25, 2024 | AAA | Stable |  |
| March 22, 2023 | AAA | Stable | |
| March 18, 2022 | AAA | Stable | |
| March 23, 2021 | AAA | Stable | |
| March 30, 2020 | AAA | Stable | |
| March 27, 2019 | AAA | Stable | |
| August 9, 2018 | AAA | from Negative to Stable | |
| March 26, 2018 | AAA | Negative | |
| March 24, 2017 | AAA | Negative | |
| March 23, 2016 | AAA | Stable | |