Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            126       60        21.034245  21.403547  21.261391  0.078385   21.264709 
2008            126       60        20.414782  20.788589  20.63544   0.089649   20.645663 
2009            126       60        20.62797   20.97315   20.835863  0.087488   20.851816 
2010            126       60        20.204142  20.566877  20.426452  0.079886   20.430062 
2011            126       60        20.851643  21.240509  21.090224  0.084812   21.095622 
2012            126       60        21.231546  21.608503  21.464953  0.07798    21.472225 
2013            126       60        20.413553  20.899668  20.717399  0.103312   20.7219   
2014            126       60        19.947485  20.4596    20.264357  0.1112     20.26879  
2015            126       60        20.617487  21.133663  20.947051  0.107354   20.960085 
2016            126       60        21.226574  21.744049  21.552364  0.108562   21.562147 
2017            126       60        21.374779  21.869942  21.685114  0.100519   21.704187 
2018            126       60        20.726013  21.248167  21.042134  0.112496   21.052522 
2019            126       60        21.353949  21.831419  21.652477  0.100781   21.660308 
2020            126       60        21.30335   21.780333  21.606411  0.097149   21.620022 
2021            126       60        20.769445  21.131645  20.999514  0.074107   21.008142 
2022            126       60        21.132006  21.584904  21.419011  0.092182   21.434186 
2023            126       60        20.937731  21.418585  21.240804  0.100541   21.247604