Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            117       54        18.195868  18.719233  18.512532  0.132855   18.53625  
2008            117       54        16.326866  17.010666  16.730111  0.176315   16.764366 
2009            117       54        18.849133  19.392     19.165019  0.138671   19.189899 
2010            117       54        19.001034  19.3671    19.229575  0.08998    19.247383 
2011            117       54        17.634867  18.273199  18.038528  0.160114   18.064417 
2012            117       54        15.8729    16.596767  16.314882  0.182925   16.347917 
2013            117       54        17.499067  18.157066  17.906195  0.164535   17.933617 
2014            117       54        17.1411    17.733767  17.496723  0.15123    17.526783 
2015            117       54        19.688267  20.187799  20.00034   0.117098   20.01795  
2016            117       54        18.173468  18.812     18.563327  0.160093   18.5984   
2017            117       54        17.464466  18.174633  17.899442  0.177858   17.930584 
2018            117       54        18.048134  18.690201  18.433184  0.158467   18.45645  
2019            117       54        17.882267  18.467966  18.25837   0.145414   18.282933 
2020            117       54        20.121967  20.723566  20.505831  0.15262    20.537633 
2021            117       54        15.9158    16.7218    16.402796  0.198392   16.427917 
2022            117       54        17.937965  18.646069  18.367904  0.1769     18.401759 
2023            117       54        17.193068  17.936834  17.66547   0.184966   17.694883