Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            74        54        18.65571   18.888742  18.753752  0.055941   18.744823 
2008            74        54        15.902871  16.227613  16.040134  0.07781    16.027564 
2009            74        54        17.272774  17.610613  17.43121   0.08311    17.431322 
2010            74        54        14.185484  14.506935  14.330323  0.077804   14.331871 
2011            74        54        17.205774  17.519741  17.336244  0.074541   17.32642  
2012            74        54        16.990774  17.377419  17.170614  0.094413   17.17408  
2013            74        54        16.708742  17.129807  16.905081  0.103207   16.908516 
2014            74        54        16.693031  17.088194  16.8846    0.100087   16.882468 
2015            74        54        18.611582  18.897516  18.737445  0.071117   18.737742 
2016            74        54        14.487452  15.084452  14.761521  0.143129   14.761564 
2017            74        54        15.252193  15.745065  15.48769   0.123275   15.486226 
2018            74        54        14.90871   15.353903  15.104193  0.104991   15.105339 
2019            74        54        16.15613   16.548645  16.346508  0.099436   16.34508  
2020            74        54        14.063484  14.468323  14.242048  0.098198   14.240564 
2021            74        54        14.335968  14.859936  14.581028  0.1276     14.580532 
2022            74        54        13.499645  14.089161  13.759484  0.142253   13.760016 
2023            74        54        13.614166  14.074233  13.818817  0.110503   13.81735