Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1320      1260      5.3161     5.978433   5.659181   0.158493   5.675184  
2008            1320      1260      6.464267   7.180967   6.835884   0.158896   6.819517  
2009            1320      1260      5.8742     6.726767   6.222632   0.198114   6.191783  
2010            1320      1260      7.8524     8.6086     8.290193   0.157271   8.305434  
2011            1320      1260      5.892586   6.722      6.245298   0.187303   6.229052  
2012            1320      1260      7.9993     8.8658     8.394958   0.190506   8.387233  
2013            1320      1260      6.2912     7.3224     6.745877   0.258203   6.734567  
2014            1320      1260      5.053667   6.100433   5.520882   0.250173   5.513533  
2015            1320      1260      4.858467   5.6753     5.266475   0.176925   5.25665   
2016            1320      1260      6.504567   7.544867   6.958064   0.224569   6.907867  
2017            1320      1260      6.230733   6.5324     6.33797    0.076713   6.325634  
2018            1320      1260      5.133967   5.908633   5.504847   0.191629   5.493217  
2019            1320      1260      5.834567   6.854567   6.260309   0.216653   6.19475   
2020            1320      1260      6.382233   6.933134   6.624124   0.133423   6.607533  
2021            1320      1260      6.665133   7.6232     7.065384   0.190186   7.024567  
2022            1320      1260      6.697      7.719733   7.188667   0.235862   7.191817  
2023            1320      1260      7.051414   7.953483   7.436155   0.239467   7.420431