| January |
| February |
| March |
| April |
| May |
| June |
| July |
| August |
| September |
| October |
| November |
| December |
|
| $ per Gallon | 2.44 | 3.08 | 2.25 | 2.56 |
| $ per Liter | 0.644 | 0.814 | 0.594 | 0.677 |
| $ per Gallon | 2.50 | 3.14 | 2.26 | 2.58 |
| $ per Liter | 0.662 | 0.829 | 0.596 | 0.681 |
| $ per Gallon | 2.58 | 3.20 | 2.32 | 2.64 |
| $ per Liter | 0.681 | 0.846 | 0.612 | 0.697 |
| $ per Gallon | 2.61 | 3.24 | 2.34 | 2.66 |
| $ per Liter | 0.688 | 0.857 | 0.617 | 0.702 |
| $ per Gallon | 2.65 | 3.32 | 2.39 | 2.72 |
| $ per Liter | 0.700 | 0.877 | 0.630 | 0.719 |
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