Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            81        57        22.234434  22.582067  22.45546   0.089608   22.472733 
2008            81        57        21.658234  21.971134  21.835351  0.082758   21.844833 
2009            81        57        21.169233  21.335133  21.229243  0.043698   21.217167 
2010            81        57        21.819799  22.010866  21.942324  0.051733   21.9508   
2011            81        57        21.233034  21.435633  21.366682  0.058577   21.381767 
2012            81        57        22.460333  22.558399  22.52267   0.025162   22.528933 
2013            81        57        20.950134  21.129499  21.052877  0.048098   21.064434 
2014            81        57        22.5502    22.638599  22.578612  0.02242    22.5721   
2015            81        57        23.177633  23.353634  23.295008  0.04699    23.309267 
2016            81        57        23.179966  23.3573    23.289838  0.046991   23.298767 
2017            81        57        22.034201  22.103001  22.085335  0.014827   22.088966 
2018            81        57        23.511566  23.5783    23.555084  0.018356   23.559    
2019            81        57        22.019466  22.193733  22.112389  0.046516   22.112101 
2020            81        57        22.441601  22.526634  22.492194  0.025292   22.498266 
2021            81        57        22.742933  22.950233  22.882701  0.053806   22.9016   
2022            81        57        23.059134  23.244066  23.162616  0.045521   23.169634 
2023            81        57        22.3473    22.464001  22.401788  0.028952   22.4016