| 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 | 23 | 1.83 | 4.60 | 10.08 | 0.22 | 0.44 | 0.70 | |||||||||
| 2008 | 6 | 0.00 | 0.62 | 2.32 | 0.00 | 0.03 | 0.07 | 2008 | 22 | 0.74 | 2.41 | 5.70 | 0.04 | 0.21 | 0.41 | ||||
| 2009 | 7 | 0.00 | 0.37 | 1.20 | 0.00 | 0.01 | 0.04 | 2009 | 25 | 0.05 | 0.43 | 0.96 | 0.00 | 0.01 | 0.03 | ||||
| 2010 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2010 | 22 | 0.05 | 0.42 | 0.90 | 0.00 | 0.04 | 0.10 | ||||
| 2011 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2011 | 22 | 2.25 | 4.24 | 7.43 | 0.16 | 0.24 | 0.32 | ||||
| 2012 | 6 | 0.00 | 0.60 | 1.56 | 0.00 | 0.01 | 0.03 | 2012 | 22 | 1.56 | 3.47 | 6.82 | 0.08 | 0.20 | 0.33 | ||||
| 2013 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2013 | 22 | 0.00 | 0.14 | 0.33 | 0.00 | 0.01 | 0.02 | ||||
| 2014 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2014 | 22 | 0.41 | 1.19 | 2.41 | 0.01 | 0.07 | 0.14 | ||||
| 2015 | 6 | 0.00 | 0.21 | 1.07 | 0.00 | 0.01 | 0.02 | 2015 | 22 | 0.98 | 2.86 | 6.55 | 0.05 | 0.15 | 0.25 | ||||
| 2016 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2016 | 22 | 1.40 | 3.26 | 6.54 | 0.04 | 0.13 | 0.23 | ||||
| 2017 | 2017 | 22 | 3.04 | 9.85 | 28.11 | 0.20 | 0.60 | 1.15 | |||||||||||
| 2018 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2018 | 22 | 1.88 | 3.23 | 5.22 | 0.10 | 0.19 | 0.30 | ||||
| 2019 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2019 | 22 | 1.86 | 3.23 | 5.24 | 0.06 | 0.12 | 0.19 | ||||
| 2020 | 2020 | 22 | 0.75 | 2.98 | 8.06 | 0.01 | 0.17 | 0.36 | |||||||||||
| 2021 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2021 | 22 | 1.47 | 2.68 | 4.49 | 0.05 | 0.10 | 0.16 | ||||
| 2022 | 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2022 | 22 | 2.02 | 3.33 | 5.21 | 0.04 | 0.11 | 0.18 | ||||
| 2023 | 2023 | ||||||||||||||||||
| 2024 | 2024 | ||||||||||||||||||
| 2025 | 2025 | ||||||||||||||||||