| 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 | 56 | 0.08 | 0.21 | 0.35 | 0.00 | 0.02 | 0.05 | |||||||||
| 2008 | 13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2008 | 51 | 0.43 | 1.15 | 2.23 | 0.05 | 0.18 | 0.34 | ||||
| 2009 | 15 | 0.00 | 0.41 | 1.35 | 0.00 | 0.04 | 0.13 | 2009 | 53 | 0.66 | 1.28 | 2.13 | 0.03 | 0.09 | 0.15 | ||||
| 2010 | 13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2010 | 51 | 0.96 | 2.04 | 3.72 | 0.14 | 0.40 | 0.72 | ||||
| 2011 | 13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2011 | 51 | 0.00 | 0.12 | 0.27 | 0.00 | 0.01 | 0.02 | ||||
| 2012 | 13 | 0.00 | 0.13 | 0.51 | 0.00 | 0.01 | 0.04 | 2012 | 51 | 0.93 | 1.93 | 3.45 | 0.09 | 0.21 | 0.34 | ||||
| 2013 | 13 | 0.69 | 2.19 | 5.02 | 0.01 | 0.14 | 0.29 | 2013 | 51 | 0.38 | 0.95 | 1.77 | 0.05 | 0.18 | 0.33 | ||||
| 2014 | 13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2014 | 51 | 0.33 | 0.60 | 0.93 | 0.05 | 0.12 | 0.20 | ||||
| 2015 | 13 | 0.00 | 0.09 | 0.32 | 0.00 | 0.01 | 0.03 | 2015 | 51 | 1.00 | 2.29 | 4.40 | 0.22 | 0.48 | 0.81 | ||||
| 2016 | 13 | 0.00 | 0.90 | 3.68 | 0.00 | 0.12 | 0.36 | 2016 | 51 | 2.04 | 4.26 | 8.09 | 0.50 | 0.97 | 1.58 | ||||
| 2017 | 2017 | 51 | 3.38 | 7.29 | 14.70 | 0.68 | 1.33 | 2.22 | |||||||||||
| 2018 | 13 | 0.00 | 0.14 | 0.43 | 0.00 | 0.01 | 0.02 | 2018 | 51 | 3.74 | 9.18 | 20.87 | 0.75 | 1.55 | 2.73 | ||||
| 2019 | 13 | 0.63 | 3.35 | 10.60 | 0.00 | 0.38 | 0.92 | 2019 | 51 | 5.91 | 11.78 | 22.65 | 0.95 | 1.70 | 2.73 | ||||
| 2020 | 2020 | 51 | 4.41 | 9.38 | 18.91 | 0.63 | 1.16 | 1.86 | |||||||||||
| 2021 | 13 | 0.58 | 3.93 | 14.41 | 0.00 | 0.50 | 1.31 | 2021 | 51 | 5.39 | 11.93 | 25.17 | 0.95 | 1.71 | 2.76 | ||||
| 2022 | 13 | 0.11 | 0.80 | 1.92 | 0.00 | 0.05 | 0.11 | 2022 | 51 | 5.16 | 8.77 | 14.52 | 0.58 | 0.95 | 1.40 | ||||
| 2023 | 2023 | ||||||||||||||||||
| 2024 | 2024 | ||||||||||||||||||
| 2025 | 2025 | ||||||||||||||||||