| Día | Enero | Febrero | Marzo | Abril | Mayo | Junio |
| 1 |
* | * | 41.05 | * | * | |
| 2 | 42.80 | * | * | 41.10 | 40.70 | 40.40 |
| 3 | 42.65 | 42.35 | * | 41.00 | * | 40.40 |
| 4 | * | 42.30 | * | 41.25 | * | 40.40 |
| 5 | * | 42.30 | 41.35 | * | 40.65 | 40.30 |
| 6 | * | 42.25 | 41.20 | * | 40.55 | 40.15 |
| 7 | 42.50 | 42.20 | 41.15 | 41.75 | 40.60 | * |
| 8 | 42.70 | * | * | 41.90 | 40.60 | * |
| 9 | 42.55 | * | * | 41.90 | 40.50 | 40.20 |
| 10 | 42.75 | 42.20 | 41.20 | 41.75 | * | 40.10 |
| 11 | * | 42.20 | 41.25 | 41.25 | * | 39.85 |
| 12 | * | 42.20 | 41.30 | * | 40.55 | 39.75 |
| 13 | 42.85 | 42.15 | 41.35 | * | 40.45 | 39.80 |
| 14 | 42.80 | 42.00 | 41.10 | 41.00 | 40.45 | * |
| 15 | 42.80 | * | * | 40.85 | 40.55 | * |
| 16 | 42.75 | * | * | 41.00 | 40.60 | 39.65 |
| 17 | 42.70 | 42.05 | 40.95 | * | * | 39.80 |
| 18 | * | 42.00 | 41.05 | * | * | 39.55 |
| 19 | * | 42.00 | 41.00 | * | 40.45 | * |
| 20 | 42.60 | 41.80 | 41.00 | * | 40.35 | 39.30 |
| 21 | 42.55 | 41.55 | 40.95 | 40.90 | 40.40 | * |
| 22 | 42.30 | * | * | 40.75 | 40.40 | * |
| 23 | 42.30 | * | * | 40.60 | 40.35 | 39.15 |
| 24 | 42.05 | 41.50 | 40.90 | 40.70 | * | 39.00 |
| 25 | * | 41.40 | 40.90 | 40.80 | * | 39.10 |
| 26 | * | 41.25 | 40.90 | * | 40.35 | 39.10 |
| 27 | 42.25 | 41.25 | 40.95 | * | 40.35 | 38.65 |
| 28 | 42.10 | 41.35 | 40.85 | 40.85 | 40.45 | * |
| 29 | 42.15 | * | * | 40.75 | 40.40 | * |
| 30 | 42.05 | * | * | 40.70 | 40.40 | 38.60 |
| 31 | 41.95 | 40.90 | * |