Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            274       245       5.119581   5.755774   5.415566   0.154587   5.403193  
2008            274       245       6.018968   6.457193   6.217523   0.114563   6.200065  
2009            274       245       7.015193   7.642807   7.307504   0.151998   7.287419  
2010            274       245       7.232258   7.708903   7.487531   0.119113   7.482903  
2011            274       245       7.882936   8.277839   8.044352   0.094309   8.030709  
2012            274       245       8.58342    8.934452   8.756055   0.080718   8.754645  
2013            274       245       6.390871   6.959      6.685258   0.139084   6.686645  
2014            274       245       7.589935   8.258      7.9327     0.164753   7.929258  
2015            274       245       7.856323   8.433032   8.134497   0.145805   8.121064  
2016            274       245       7.761935   8.287      8.032267   0.126453   8.017838  
2017            274       245       6.973355   7.819516   7.378747   0.204922   7.370677  
2018            274       245       5.729032   6.450323   6.088503   0.167128   6.090968  
2019            274       245       7.415806   7.743194   7.591246   0.078609   7.58458   
2020            274       245       6.438452   7.573129   7.005435   0.28193    6.959968  
2021            274       245       6.410968   8.340194   7.338115   0.485849   7.239419  
2022            274       245       7.108516   7.894161   7.477585   0.198723   7.435968  
2023            274       245       5.876266   6.772634   6.290548   0.222544   6.241