Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1380      1279      28.218866  28.881201  28.717193  0.105678   28.727467 
2008            1380      1279      29.1161    29.454399  29.289551  0.069899   29.2834   
2009            1380      1279      28.218267  29.066032  28.832637  0.187909   28.9104   
2010            1380      1279      29.253099  30.037834  29.901884  0.131137   29.9436   
2011            1380      1279      29.1201    29.517601  29.402803  0.064089   29.409567 
2012            1380      1279      29.1786    29.493401  29.360474  0.081327   29.367701 
2013            1380      1279      28.588833  29.399267  29.102461  0.185966   29.164566 
2014            1380      1279      27.995033  28.659468  28.505707  0.141931   28.561266 
2015            1380      1279      28.687233  29.332333  28.938616  0.18025    28.889666 
2016            1380      1279      28.4566    28.879267  28.756133  0.062824   28.755133 
2017            1380      1279      28.030933  28.358166  28.244503  0.075665   28.249666 
2018            1380      1279      28.883301  29.6091    29.396732  0.161683   29.4615   
2019            1380      1279      29.109632  29.478899  29.248744  0.098312   29.2152   
2020            1380      1279      28.496599  28.885866  28.718315  0.089624   28.737833 
2021            1380      1279      28.797033  29.220066  29.044918  0.072423   29.040733 
2022            1380      1279      29.3549    29.748699  29.629563  0.083525   29.655466 
2023            1380      1279      28.818466  29.869467  29.664249  0.230812   29.772734