Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            300       271       21.619267  22.4832    22.197363  0.164319   22.218367 
2008            300       271       20.9981    21.7938    21.449888  0.220076   21.522934 
2009            300       271       20.984766  21.313766  21.111304  0.075147   21.117201 
2010            300       271       21.164267  21.846834  21.527693  0.190998   21.541466 
2011            300       271       20.707434  21.293867  20.958828  0.159361   20.895233 
2012            300       271       22.394667  22.553301  22.477375  0.038345   22.4736   
2013            300       271       20.828234  21.077499  20.957092  0.042289   20.951401 
2014            300       271       22.107401  22.6061    22.35076   0.137121   22.319099 
2015            300       271       22.940767  23.370033  23.136285  0.128616   23.119967 
2016            300       271       22.658133  23.288334  22.999194  0.160948   22.993668 
2017            300       271       21.520433  22.054399  21.840406  0.134108   21.825367 
2018            300       271       22.784201  23.5261    23.250701  0.200441   23.256666 
2019            300       271       21.622667  22.1007    21.864301  0.122254   21.821566 
2020            300       271       22.287199  22.5602    22.463953  0.049      22.459667 
2021            300       271       22.009266  22.915667  22.535845  0.259305   22.565701 
2022            300       271       22.719734  23.115932  22.924619  0.082215   22.923134 
2023            300       271       21.987833  22.380199  22.161467  0.11523    22.109133