6. | Cash and cash equivalents |
| | 2017 | | 2016 | | ||
Banks | | | 5,484,981 | | | 3,319,465 | |
Short-term investments | | | 2,459,438 | | | 5,090,048 | |
Cash | | | 1,466 | | | 954 | |
| | | 7,945,885 | | | 8,410,467 | |
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 | |