| Día | Enero | Febrero | Marzo | Abril | Mayo | Junio |
| 1 | * | 19,40 | 19,20 | 18,90 | * | 18,35 |
| 2 | 19,40 | 19,20 | * | 18,70 | 18,30 | |
| 3 | 19,40 | 19,15 | * | 18,65 | 18,25 | |
| 4 | 19,40 | 19,10 | 18,85 | 18,70 | * | |
| 5 | 19,65 | * | * | 18,80 | 18,75 | * |
| 6 | 19,65 | * | * | 18,75 | 18,70 | 18,30 |
| 7 | 19,65 | 19,40 |
* |
18,75 | * | 18,30 |
| 8 | * | 19,35 | * | 18,75 | * | 18,30 |
| 9 | * | 19,30 | 19,10 | * | 18,65 | 18,25 |
| 10 | 19,75 | 19,30 | 19,05 | * | 18,60 | 18,30 |
| 11 | 19,75 | 19.30 | 19,00 | 18,80 | 18,65 | * |
| 12 | 19,70 | * | * | 18,80 | 18,65 | * |
| 13 | 19,70 | * | * | 18,75 | 18,70 | 18,30 |
| 14 | 19,65 | 19,25 | 19,00 | 18,65 | * | 18,25 |
| 15 | * | 19,25 | 19,00 | 18,65 | * | 18,30 |
| 16 | * | 19,25 | 19,00 | * | 18,70 | 18,35 |
| 17 | 19,60 | 19,30 | 19,05 | * | 18,65 | 18,30 |
| 18 | 19,60 | 19,40 | 19,10 | 18,80 | * | * |
| 19 | 19,55 | * | * | 18,80 | 18,60 | * |
| 20 | 19,55 | * | * | 18,70 | 18,60 | 18,30 |
| 21 | 19,55 | 19,40 | 19,10 | 18,65 | * | 18,30 |
| 22 | * | 19,35 | 19,20 | * | * | 18,30 |
| 23 | * | 19,30 | 19,05 | * | 18,60 | 18,30 |
| 24 | 19,55 | 19,30 | 19,05 | * | 18,60 | 18,25 |
| 25 | 19.55 | 19,25 | 19,05 | 18,65 | 18,55 | * |
| 26 | 19,50 | * | * | 18,70 | 18,50 | * |
| 27 | 19,45 | * | * | 18,65 | 18,45 | 18,25 |
| 28 | 19,40 | 19,25 | 19,00 | 18,75 | * | 18,20 |
| 29 | * | * | 19,00 | 18,70 | * | 18,15 |
| 30 | * | * | 18,95 | * | 18,45 | 18,15 |
| 31 | 19,40 | * | 18,90 | * | 18,40 | * |