| Month | 2023 | 2024 | 2025 |
|---|---|---|---|
| January | 5.5353 | 4.2589 | 2.9155 |
| February | 7.1060 | 3.9258 | 2.6604 |
| March | 6.4056 | 5.5568 | 5.4172 |
| April | 7.4728 | 6.5643 | 4.4961 |
| May | 8.5973 | 8.0582 | 4.1262 |
| June | 6.3264 | 5.8489 | 3.8120 |
| July | 5.3053 | 5.7746 | 3.8289 |
| August | 5.2448 | 6.0215 | 3.6815 |
| September | 4.6425 | 3.6738 | 2.5066 |
| October | 6.4280 | 3.7657 | |
| November | 3.9348 | 4.0956 | |
| December | 4.2681 | 3.1775 | |
| Average | 5.9389 | 5.0601 | 3.7196 |