Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1819      1715      2.844643   4.083393   3.48155    0.258077   3.472036  
2008            1819      1715      1.543345   2.889069   2.201474   0.255639   2.215414  
2009            1819      1715      1.837      2.7205     2.187781   0.206679   2.164964  
2010            1819      1715      2.942107   3.594607   3.188707   0.156565   3.151714  
2011            1819      1715      2.82       3.950536   3.281793   0.258115   3.259607  
2012            1819      1715      3.327034   4.533724   3.860347   0.240684   3.834517  
2013            1819      1715      3.763714   5.014321   4.420323   0.271203   4.43525   
2014            1819      1715      1.881429   3.049071   2.431155   0.230769   2.408036  
2015            1819      1715      2.123786   3.429357   2.77424    0.285565   2.787964  
2016            1819      1715      3.348414   4.641621   3.905777   0.286623   3.880552  
2017            1819      1715      3.844679   4.820929   4.289485   0.204784   4.284714  
2018            1819      1715      1.34325    3.792107   2.623611   0.471223   2.63225   
2019            1819      1715      1.04       2.900214   1.891328   0.394399   1.876393  
2020            1819      1715      4.218896   4.925414   4.569164   0.145037   4.571793  
2021            1819      1715      2.547539   4.6555     3.54118    0.438597   3.497923  
2022            1819      1715      0.488643   4.019607   2.329338   0.689451   2.309393  
2023            1819      1715      2.868714   4.640143   3.869758   0.324165   3.912321