| Spring Survey | Fall Survey | ||||||||||||||||||
| Age | Year | n | Numerical Index | Biomass Index | Age | Year | n | Numerical Index | Biomass Index | ||||||||||
| LCI | Index | UCI | LCI | Index | UCI | LCI | Index | UCI | LCI | Index | UCI | ||||||||
| All | 2007 | All | 2007 | 118 | 9.5 | 15.5 | 25.0 | 0.5 | 0.7 | 0.9 | |||||||||
| 2008 | 43 | 27.1 | 60.7 | 134.4 | 0.5 | 0.7 | 1.0 | 2008 | 113 | 6.1 | 11.1 | 19.6 | 0.2 | 0.4 | 0.5 | ||||
| 2009 | 51 | 59.3 | 128.6 | 277.9 | 0.9 | 1.3 | 1.7 | 2009 | 122 | 12.0 | 18.7 | 28.8 | 0.5 | 0.7 | 0.8 | ||||
| 2010 | 42 | 35.4 | 75.0 | 157.6 | 0.7 | 1.2 | 1.8 | 2010 | 113 | 16.7 | 27.0 | 43.5 | 0.5 | 0.6 | 0.8 | ||||
| 2011 | 42 | 16.5 | 41.7 | 103.3 | 0.6 | 0.9 | 1.4 | 2011 | 113 | 5.6 | 9.6 | 16.1 | 0.3 | 0.5 | 0.6 | ||||
| 2012 | 42 | 9.2 | 21.8 | 50.0 | 0.2 | 0.5 | 0.7 | 2012 | 113 | 2.1 | 3.1 | 4.4 | 0.2 | 0.3 | 0.3 | ||||
| 2013 | 43 | 164.4 | 288.4 | 505.6 | 1.3 | 1.7 | 2.2 | 2013 | 113 | 9.9 | 16.4 | 26.9 | 0.5 | 0.6 | 0.8 | ||||
| 2014 | 43 | 18.8 | 47.0 | 115.5 | 0.6 | 1.0 | 1.5 | 2014 | 113 | 1.4 | 2.7 | 4.7 | 0.1 | 0.3 | 0.4 | ||||
| 2015 | 42 | 2.0 | 4.3 | 8.2 | 0.1 | 0.2 | 0.3 | 2015 | 113 | 2.6 | 4.3 | 6.9 | 0.2 | 0.2 | 0.3 | ||||
| 2016 | 42 | 85.0 | 156.5 | 287.4 | 0.9 | 1.4 | 1.9 | 2016 | 113 | 4.6 | 8.1 | 13.7 | 0.2 | 0.3 | 0.5 | ||||
| 2017 | 14 | 0.0 | 0.1 | 0.6 | 0.0 | 0.0 | 0.0 | 2017 | 113 | 1.8 | 3.0 | 4.8 | 0.1 | 0.2 | 0.3 | ||||
| 2018 | 42 | 16.1 | 37.1 | 83.8 | 0.5 | 0.8 | 1.1 | 2018 | 113 | 0.9 | 1.6 | 2.7 | 0.1 | 0.1 | 0.2 | ||||
| 2019 | 42 | 86.4 | 164.5 | 312.4 | 0.8 | 1.2 | 1.7 | 2019 | 113 | 4.8 | 7.3 | 11.1 | 0.2 | 0.2 | 0.3 | ||||
| 2020 | 2020 | 113 | 1.6 | 2.7 | 4.2 | 0.1 | 0.1 | 0.2 | |||||||||||
| 2021 | 42 | 6.8 | 14.0 | 27.5 | 0.2 | 0.3 | 0.5 | 2021 | 113 | 0.6 | 1.2 | 2.0 | 0.0 | 0.1 | 0.1 | ||||
| 2022 | 42 | 11.7 | 22.8 | 43.6 | 0.3 | 0.4 | 0.5 | 2022 | 113 | 2.5 | 3.9 | 5.7 | 0.1 | 0.2 | 0.2 | ||||
| 2023 | 2023 | ||||||||||||||||||
| 2024 | 2024 | ||||||||||||||||||
| 2025 | 2025 | ||||||||||||||||||