| 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 | 66 | 55.44 | 109.13 | 213.91 | 2.76 | 4.58 | 7.28 | |||||||||
| 2008 | 31 | 3.60 | 7.46 | 14.56 | 0.10 | 0.33 | 0.60 | 2008 | 61 | 84.83 | 166.79 | 327.05 | 2.98 | 4.72 | 7.21 | ||||
| 2009 | 31 | 0.00 | 0.17 | 0.60 | 0.00 | 0.03 | 0.10 | 2009 | 64 | 7.39 | 12.16 | 19.65 | 0.41 | 0.68 | 1.00 | ||||
| 2010 | 29 | 0.00 | 0.06 | 0.17 | 0.00 | 0.00 | 0.01 | 2010 | 61 | 5.41 | 10.80 | 20.70 | 0.62 | 1.15 | 1.86 | ||||
| 2011 | 29 | 0.80 | 2.25 | 4.86 | 0.10 | 0.42 | 0.83 | 2011 | 61 | 66.43 | 130.88 | 256.92 | 2.67 | 4.20 | 6.39 | ||||
| 2012 | 29 | 29.39 | 72.67 | 177.61 | 1.19 | 2.21 | 3.70 | 2012 | 61 | 227.57 | 413.08 | 749.17 | 6.32 | 9.11 | 12.96 | ||||
| 2013 | 29 | 0.52 | 1.19 | 2.17 | 0.00 | 0.06 | 0.12 | 2013 | 61 | 15.25 | 32.13 | 66.56 | 1.09 | 1.82 | 2.81 | ||||
| 2014 | 29 | 0.00 | 0.08 | 0.28 | 0.00 | 0.00 | 0.01 | 2014 | 61 | 15.33 | 32.77 | 68.82 | 1.47 | 2.65 | 4.39 | ||||
| 2015 | 29 | 0.72 | 1.97 | 4.12 | 0.05 | 0.09 | 0.12 | 2015 | 61 | 22.88 | 46.08 | 91.84 | 2.29 | 3.60 | 5.43 | ||||
| 2016 | 29 | 5.72 | 12.14 | 24.69 | 0.21 | 0.50 | 0.86 | 2016 | 61 | 20.06 | 41.81 | 86.03 | 1.76 | 2.98 | 4.75 | ||||
| 2017 | 2017 | 61 | 46.61 | 97.16 | 201.35 | 2.71 | 4.31 | 6.61 | |||||||||||
| 2018 | 29 | 22.76 | 61.98 | 165.96 | 1.02 | 1.94 | 3.26 | 2018 | 61 | 12.01 | 28.66 | 66.60 | 1.14 | 2.10 | 3.48 | ||||
| 2019 | 29 | 5.50 | 13.58 | 31.72 | 0.46 | 0.87 | 1.40 | 2019 | 61 | 5.69 | 11.20 | 21.26 | 0.78 | 1.27 | 1.89 | ||||
| 2020 | 2020 | 61 | 18.66 | 39.17 | 81.05 | 1.23 | 2.06 | 3.20 | |||||||||||
| 2021 | 29 | 1.17 | 2.75 | 5.50 | 0.07 | 0.16 | 0.26 | 2021 | 61 | 3.90 | 8.23 | 16.36 | 0.35 | 0.73 | 1.21 | ||||
| 2022 | 29 | 1.66 | 4.50 | 10.38 | 0.07 | 0.28 | 0.52 | 2022 | 61 | 36.80 | 77.08 | 160.28 | 1.71 | 2.98 | 4.87 | ||||
| 2023 | 2023 | ||||||||||||||||||
| 2024 | 2024 | ||||||||||||||||||
| 2025 | 2025 | ||||||||||||||||||