Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            277       214       20.512501  20.8426    20.637697  0.053425   20.648684 
2008            277       214       21.488434  22.018734  21.66536   0.108314   21.690917 
2009            277       214       20.071632  20.450832  20.253743  0.066019   20.26245  
2010            277       214       20.5196    20.679701  20.618825  0.042539   20.625517 
2011            277       214       23.021862  23.232655  23.085231  0.041758   23.072983 
2012            277       214       23.607201  24.0194    23.665365  0.075997   23.633801 
2013            277       214       19.863567  20.208767  19.954132  0.074503   19.938434 
2014            277       214       20.156     20.238033  20.18549   0.01976    20.183967 
2015            277       214       22.1717    22.351801  22.211011  0.03801    22.201917 
2016            277       214       21.364233  21.678633  21.517335  0.0887     21.520534 
2017            277       214       23.2612    23.5478    23.371834  0.067874   23.367701 
2018            277       214       20.455067  21.093033  20.723503  0.149681   20.744249 
2019            277       214       20.210434  20.780933  20.484936  0.152373   20.497133 
2020            277       214       22.533234  22.8465    22.681024  0.091547   22.694633 
2021            277       214       21.085567  21.211567  21.131061  0.030685   21.123067 
2022            277       214       21.772699  21.995699  21.867932  0.04797    21.873433 
2023            277       214       21.707035  21.842484  21.759316  0.024848   21.761913