| PTC Series A1 | -- | -- | [ICRA]A-(SO) | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| PTC Series A1 | -- | -- | [ICRA]A(SO) | -- |
| PTC Series A1 | -- | -- | [ICRA]A-(SO) | -- |
| PTC Series A1 | -- | -- | [ICRA]A+(SO) | -- |
| PTC Series A1 | -- | -- | [ICRA]A+(SO) | -- |
| Series A1 SN | -- | -- | Withdrawn | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |