Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1819      1715      8.15903    8.957162   8.59517    0.193086   8.54468   
2008            1819      1715      8.210175   8.912814   8.600841   0.16295    8.554139  
2009            1819      1715      7.965529   8.776123   8.424326   0.168113   8.398241  
2010            1819      1715      8.913715   9.502794   9.295366   0.119789   9.275902  
2011            1819      1715      8.753772   9.419165   9.099602   0.153544   9.070885  
2012            1819      1715      9.466355   10.398716  10.066864  0.173854   10.065557 
2013            1819      1715      8.831923   9.706197   9.376075   0.175942   9.367726  
2014            1819      1715      8.000189   9.017756   8.668158   0.186493   8.689033  
2015            1819      1715      7.832819   9.061088   8.604415   0.237177   8.612805  
2016            1819      1715      8.833673   9.833812   9.510996   0.188698   9.526626  
2017            1819      1715      8.297055   9.335159   8.968967   0.193269   8.98214   
2018            1819      1715      7.915115   9.316183   8.839545   0.262533   8.875159  
2019            1819      1715      8.092395   8.860918   8.554445   0.143454   8.552342  
2020            1819      1715      9.056046   9.670473   9.4018     0.128569   9.409694  
2021            1819      1715      9.554995   10.23733   10.020114  0.137583   10.023281 
2022            1819      1715      8.758192   9.936074   9.513466   0.229305   9.542283  
2023            1819      1715      9.610573   10.284348  9.961708   0.174459   9.937531