| Jan | Feb | March | April | May | June | July | Aug | Sept | Oct | Nov | Dec |
| 1 | 141.7 | 52.5 | | | | | | | | | | |
| 2 | 63.5 | 96.4 | | | | | | | | | | |
| 3 | 134.4 | 54.6 | | | | | | | | | | |
| 4 | 159.0 | 142.2 | | | | | | | | | | |
| 5 | 68.4 | 59.7 | | | | | | | | | | |
| 6 | 56.8 | 59.2 | | | | | | | | | | |
| 7 | 52.7 | 36.4 | | | | | | | | | | |
| 8 | 50.4 | 78.6 | | | | | | | | | | |
| 9 | 70.8 | 51.2 | | | | | | | | | | |
| 10 | 58.3 | 63.1 | | | | | | | | | | |
| 11 | 176.1 | 47.8 | | | | | | | | | | |
| 12 | 84.6 | 31.6 | | | | | | | | | | |
| 13 | 130.9 | 53.6 | | | | | | | | | | |
| 14 | 147.3 | 84.1 | | | | | | | | | | |
| 15 | 31.4 | 229.2 | | | | | | | | | | |
| 16 | 118.1 | 161.6 | | | | | | | | | | |
| 17 | 127.6 | | | | | | | | | | | |
| 18 | 161.9 | | | | | | | | | | | |
| 19 | 292.6 | | | | | | | | | | | |
| 20 | 152.8 | | | | | | | | | | | |
| 21 | 19.1 | | | | | | | | | | | |
| 22 | 65.3 | | | | | | | | | | | |
| 23 | 129.2 | | | | | | | | | | | |
| 24 | 137.9 | | | | | | | | | | | |
| 25 | 118.3 | | | | | | | | | | | |
| 26 | 72.7 | | | | | | | | | | | |
| 27 | 63.9 | | | | | | | | | | | |
| 28 | 54.7 | | | | | | | | | | | |
| 29 | 68.0 | | | | | | | | | | | |
| 30 | 67.7 | | | | | | | | | | | |
| 31 | 55.0 | | | | | | | | | | | |
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