| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 49.1 | 56.8 | 58.6 | 54.1 | ||||||||
| 2 | 52.7 | 45.3 | 62.1 | 61.5 | ||||||||
| 3 | 57.0 | 41.4 | 50.0 | 46.2 | ||||||||
| 4 | 57.4 | 53.2 | 56.5 | 50.2 | ||||||||
| 5 | 47.3 | 57.4 | 61.9 | 53.8 | ||||||||
| 6 | 47.3 | 52.2 | 32.0 | 68.9 | ||||||||
| 7 | 49.1 | 54.9 | 53.1 | 64.8 | ||||||||
| 8 | 35.2 | 54.9 | 58.3 | 67.3 | ||||||||
| 9 | 21.7 | 61.9 | 61.9 | 64.6 | ||||||||
| 10 | 41.2 | 39.4 | 60.1 | 57.2 | ||||||||
| 11 | 52.2 | 51.4 | 47.3 | |||||||||
| 12 | 51.8 | 54.5 | 59.5 | |||||||||
| 13 | 54.1 | 45.0 | 61.0 | |||||||||
| 14 | 50.7 | 51.3 | 63.9 | |||||||||
| 15 | 50.7 | 58.8 | 41.9 | |||||||||
| 16 | 28.4 | 59.2 | 51.6 | |||||||||
| 17 | 32.4 | 42.8 | 66.4 | |||||||||
| 18 | 45.7 | 38.1 | 75.7 | |||||||||
| 19 | 43.2 | 27.0 | 77.5 | |||||||||
| 20 | 48.2 | 27.9 | 79.2 | |||||||||
| 21 | 45.9 | 42.6 | 77.9 | |||||||||
| 22 | 43.7 | 50.2 | 61.9 | |||||||||
| 23 | 10.4 | 59.5 | 65.8 | |||||||||
| 24 | 22.8 | 64.0 | 73.0 | |||||||||
| 25 | 20.7 | 56.7 | 79.5 | |||||||||
| 26 | 37.2 | 53.8 | 75.2 | |||||||||
| 27 | 42.1 | 58.6 | 37.0 | |||||||||
| 28 | 49.8 | 60.4 | 70.7 | |||||||||
| 29 | 40.1 | 70.7 | ||||||||||
| 30 | 43.3 | 69.4 | ||||||||||
| 31 | 51.4 | 55.4 | ||||||||||
| Avg: | 42.7 | 50.7 | 61.8 | * 58.9 | ||||||||
| Hi: | 57.4 | 64.0 | 79.5 | * 68.9 | ||||||||
| Lo: | 10.4 | 27.0 | 32.0 | * 46.2 | ||||||||
| Note: | *Incomplete dataset. | |||||||||||
| Avg | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 42.7 | 50.7 | 61.8 | * 58.9 | ||||||||
| 2025 | 37.4 | 48.4 | 54.2 | 55.6 | 62.4 | 75.1 | 79.8 | 79.3 | 69.9 | 63.4 | 55.1 | 51.5 |
| 2024 | * 42.0 | 47.5 | 51.3 | 56.6 | 62.2 | 79.5 | 81.0 | 80.3 | 75.1 | 68.0 | 47.7 | 48.1 |
| 2023 | 37.1 | 42.9 | 43.1 | 54.3 | 63.3 | 69.7 | 81.3 | 76.5 | 73.6 | 62.5 | 51.9 | 45.4 |
| 2022 | 45.0 | 40.9 | 50.1 | 55.8 | 64.3 | 75.4 | 80.6 | 76.9 | 76.7 | 61.2 | 44.6 | 41.0 |
| 2021 | 41.5 | 38.1 | 44.0 | 53.4 | 59.8 | 77.7 | 80.0 | 81.2 | * 75.7 | 61.7 | 56.1 | 47.3 |
| 2020 | 41.9 | 38.5 | 50.3 | 55.1 | 68.3 | 77.4 | 81.6 | 83.4 | 73.0 | 64.5 | 53.6 | 41.0 |
| 2019 | 42.7 | 40.5 | 45.7 | 55.7 | 56.6 | 72.1 | 81.7 | 81.6 | 78.1 | 57.0 | 49.7 | 42.7 |
| 2018 | 47.3 | 42.7 | 51.4 | 56.1 | 69.4 | 80.4 | 81.8 | 77.3 | 74.8 | 56.4 | 45.1 | 40.4 |
| 2017 | 39.7 | 47.7 | 56.1 | 54.9 | 62.2 | 77.3 | 80.3 | 75.5 | 70.2 | 61.7 | 57.0 | 46.9 |
| 2016 | 41.4 | 46.6 | 49.2 | 52.0 | 61.1 | 78.3 | 82.1 | 75.6 | 75.2 | 67.3 | 54.1 | 40.5 |
| 2015 | 43.2 | 42.8 | 52.1 | 54.0 | 56.0 | 75.3 | 74.1 | 79.1 | 77.1 | 63.7 | 47.6 | 39.3 |
| 2014 | 38.3 | 40.1 | 47.5 | 53.1 | 63.6 | 75.9 | 76.3 | 72.7 | 69.7 | 59.9 | 46.5 | 42.0 |
| 2013 | 39.5 | 37.5 | 46.4 | 49.9 | 62.9 | 79.0 | 77.0 | 75.8 | 68.3 | 54.0 | 46.1 | 37.4 |
| 2012 | 41.9 | 36.7 | 53.4 | 59.2 | 66.7 | 82.7 | 79.8 | 76.9 | 68.3 | 57.1 | 52.1 | 38.6 |
| 2011 | 38.3 | 37.1 | 50.1 | 55.3 | 59.2 | 77.3 | 80.9 | 78.2 | 67.1 | 57.3 | 46.1 | 36.3 |
| 2010 | 39.1 | 35.0 | 44.4 | 53.0 | 62.6 | 75.3 | 77.5 | 74.9 | 74.7 | 58.7 | 44.5 | 42.7 |
| 2009 | * 49.8 | 50.9 | 49.0 | 63.0 | 69.0 | * 75.7 | 74.7 | 64.6 | 50.3 | 48.6 | 31.0 | |
| Avg | * 41.1 | * 42.4 | 50.1 | * 54.5 | 62.6 | 76.3 | * 79.5 | 77.6 | * 72.5 | 60.3 | 49.8 | 41.9 |
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