| Rating | | 2017 | | 2016 | | ||
| AAA | | | 2,807,170 | | | 3,198,394 | |
| A1 | | | 2,922,714 | | | 1,466,015 | |
| BRC1 + | | | 1,152,593 | | | 312,290 | |
| F1 | | | 896,231 | | | 545,872 | |
| Aa3 | | | 99,029 | | | - | |
| Aa2 | | | 27,868 | | | - | |
| A-2 | | | 27,350 | | | - | |
| No rating available | | | 12,750 | | | 67,185 | |
| F2 | | | 180 | | | 409,717 | |
| A1+ | | | - | | | 73,470 | |
| F1+ | | | - | | | 2,188,471 | |
| Prime-2 | | | - | | | 78,989 | |
| F3 | | | - | | | 37,172 | |
| Prime-3 | | | - | | | 32,748 | |
| B | | | - | | | 144 | |
| | | | 7,945,885 | | | 8,410,467 | |