Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            2800      2779      28.5282    28.876801  28.733872  0.080455   28.743567 
2008            2800      2779      29.0049    29.649666  29.426523  0.142158   29.458967 
2009            2800      2779      29.513966  30.1113    29.828838  0.127593   29.819401 
2010            2800      2779      29.9718    30.7243    30.298003  0.202978   30.257034 
2011            2800      2779      29.075367  29.486233  29.281081  0.067097   29.281099 
2012            2800      2779      28.886066  29.3141    29.141232  0.087671   29.159233 
2013            2800      2779      29.057667  29.428833  29.289614  0.076436   29.309601 
2014            2800      2779      29.103134  29.897667  29.608472  0.193585   29.645332 
2015            2800      2779      29.328199  29.7563    29.622047  0.083516   29.639299 
2016            2800      2779      29.2244    30.192301  29.725815  0.261469   29.7232   
2017            2800      2779      28.758034  29.4345    29.134628  0.173002   29.154467 
2018            2800      2779      29.351534  29.832434  29.653871  0.093121   29.663267 
2019            2800      2779      29.696333  30.369766  30.028548  0.173216   30.033533 
2020            2800      2779      29.704033  30.2605    30.087217  0.106072   30.1085   
2021            2800      2779      28.813366  29.114433  29.012431  0.060425   29.019634 
2022            2800      2779      29.430134  29.9744    29.658629  0.125687   29.619066 
2023            2800      2779      30.174034  30.913933  30.68227   0.15089    30.714867