| 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 | 37 | 0.00 | 0.18 | 0.38 | 0.02 | 0.38 | 0.87 | |||||||||
| 2008 | 36 | 0.33 | 0.63 | 0.98 | 0.70 | 1.44 | 2.49 | 2008 | 36 | 0.20 | 0.96 | 2.19 | 0.46 | 1.66 | 3.85 | ||||
| 2009 | 42 | 0.88 | 1.40 | 2.06 | 1.53 | 2.64 | 4.22 | 2009 | 42 | 0.29 | 0.51 | 0.75 | 0.47 | 0.94 | 1.56 | ||||
| 2010 | 36 | 0.12 | 0.40 | 0.74 | 0.31 | 0.95 | 1.88 | 2010 | 36 | 0.13 | 0.64 | 1.38 | 0.47 | 1.33 | 2.71 | ||||
| 2011 | 36 | 0.23 | 0.49 | 0.81 | 0.56 | 1.25 | 2.25 | 2011 | 36 | 0.00 | 0.26 | 0.71 | 0.00 | 0.52 | 1.42 | ||||
| 2012 | 36 | 0.01 | 0.10 | 0.21 | 0.00 | 0.31 | 0.74 | 2012 | 36 | 0.01 | 0.17 | 0.35 | 0.07 | 0.52 | 1.16 | ||||
| 2013 | 35 | 0.24 | 0.45 | 0.69 | 0.53 | 1.05 | 1.74 | 2013 | 37 | 0.00 | 0.28 | 0.69 | 0.02 | 0.49 | 1.19 | ||||
| 2014 | 36 | 0.26 | 0.50 | 0.78 | 0.24 | 0.67 | 1.25 | 2014 | 36 | 0.00 | 0.03 | 0.09 | 0.00 | 0.07 | 0.25 | ||||
| 2015 | 36 | 0.01 | 0.08 | 0.16 | 0.02 | 0.26 | 0.55 | 2015 | 36 | 0.03 | 0.14 | 0.26 | 0.08 | 0.45 | 0.95 | ||||
| 2016 | 36 | 1.04 | 1.55 | 2.19 | 0.84 | 1.36 | 2.03 | 2016 | 36 | 0.00 | 0.16 | 0.39 | 0.00 | 0.35 | 0.92 | ||||
| 2017 | 36 | 0.00 | 0.06 | 0.13 | 0.00 | 0.22 | 0.49 | 2017 | 36 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| 2018 | 36 | 0.06 | 0.21 | 0.38 | 0.15 | 0.63 | 1.31 | 2018 | 36 | 0.00 | 0.06 | 0.16 | 0.00 | 0.14 | 0.40 | ||||
| 2019 | 36 | 0.00 | 0.13 | 0.27 | 0.00 | 0.30 | 0.71 | 2019 | 36 | 0.22 | 0.45 | 0.71 | 0.32 | 0.60 | 0.94 | ||||
| 2020 | 2020 | 36 | 0.00 | 0.04 | 0.10 | 0.00 | 0.14 | 0.40 | |||||||||||
| 2021 | 36 | 0.00 | 0.11 | 0.28 | 0.00 | 0.22 | 0.56 | 2021 | 36 | 0.01 | 0.23 | 0.49 | 0.10 | 0.74 | 1.76 | ||||
| 2022 | 36 | 0.06 | 0.19 | 0.34 | 0.17 | 0.61 | 1.22 | 2022 | 36 | 0.00 | 0.13 | 0.27 | 0.03 | 0.46 | 1.07 | ||||
| 2023 | 2023 | ||||||||||||||||||
| 2024 | 2024 | ||||||||||||||||||
| 2025 | 2025 | ||||||||||||||||||