Moody’s Credit rating history
| Date | Agency | Rating Type | Rating | Action |
| 09/02/2025 | Moodys | LT Debt | Baa1 | Rating Affirmed |
| 09/02/2025 | Moodys | LT Debt | Baa1 | Rating Affirmed |
| 16/9/2024 | Moodys | LT Debt | Baa1 | Rating Affirmed |
| 16/9/2024 | Moodys | LT Debt | Baa1 | Rating Affirmed |
| 18/10/2023 | Moodys | LT Debt | Baa1 | Rating Affirmed |
| 18/10/2023 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 10/04/2022 | Moodys | LT Debt | Baa1 | Rating Affirmed |
| 10/04/2022 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 21/07/2021 | Moodys | LT Debt | A3 | Rating On Watch Down |
| 21/07/2021 | Moodys | ST Debt | P-2 | Rating On Watch Down |
| 30/04/2020 | Moodys | LT Debt | A3 | Rating Affirmed |
| 30/04/2020 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 15/04/2019 | Moodys | LT Debt | A3 | Rating Affirmed |
| 15/04/2019 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 22/01/2018 | Moodys | LT Debt | A3 | Rating Affirmed |
| 22/01/2018 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 09/08/2017 | Moodys | LT Debt | A3 | Rating Affirmed |
| 09/08/2017 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 12/08/2016 | Moodys | LT Debt | A3 | Rating Affirmed |
| 12/08/2016 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 29/02/2016 | Moodys | LT Debt | A3 | Rating Affirmed |
| 29/02/2016 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 23/12/2014 | Moodys | LT Debt | A3 | Rating Affirmed |
| 23/12/2014 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 18/12/2013 | Moodys | LT Debt | A3 | Rating Affirmed |
| 18/12/2013 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 18/12/2012 | Moodys | LT Debt | A3 | Rating Affirmed |
| 18/12/2012 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 29/01/2012 | Moodys | LT Debt | A3 | Rating Affirmed |
| 29/01/2012 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 29/12/2011 | Moodys | LT Debt | A3 | Rating Affirmed |
| 29/12/2011 | Moodys | ST Debt | P-2 | Rating Affirmed |
| 28/01/2009 | Moodys | LT Debt | A3 | Rating Off Watch |
| 28/01/2009 | Moodys | ST Debt | P-2 | Rating Off Watch |
| 29/10/2008 | Moodys | LT Debt | A2 | Rating On Watch Down |
| 29/10/2008 | Moodys | ST Debt | P-1 | Rating On Watch Down |
| 01/08/2006 | Moodys | LT Debt | A2 | Rating Affirmed |
| 01/08/2006 | Moodys | ST Debt | P-1 | Rating Affirmed |
| 16/03/2006 | Moodys | LT Debt | A2 | Rating Affirmed |
| 16/03/2006 | Moodys | ST Debt | P-1 | Rating Affirmed |
| 01/11/2005 | Moodys | LT Debt | A2 | Rating On Watch Down |
| 01/11/2005 | Moodys | ST Debt | P-1 | Rating On Watch Down |
| 21/10/2005 | Moodys | LT Debt | A2 | Rating Affirmed |
| 21/10/2005 | Moodys | ST Debt | P-1 | Rating Affirmed |
| 23/06/2005 | Moodys | LT Debt | A2 | Rating Affirmed |
| 23/06/2005 | Moodys | ST Debt | P-1 | Rating Affirmed |
| 26/07/2001 | Moodys | LT Debt | A2 | Rating Affirmed |
| 26/07/2001 | Moodys | ST Debt | P-1 | Rating Affirmed |
| 12/01/2001 | Moodys | LT Debt | A2 | Rating Downgraded |
| 12/01/2001 | Moodys | LT Debt | Rating Off Watch | |
| 17/05/2000 | Moodys | LT Debt | D | Rating Off Watch |