Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            15120     14316     7.436129   8.646646   8.085028   0.28244    8.061661  
2008            15120     14316     6.92871    8.737678   7.913909   0.310333   7.935081  
2009            15120     14316     6.481839   8.709452   7.92471    0.429927   8.019581  
2010            15120     14316     6.969645   9.009709   7.975252   0.466719   7.875887  
2011            15120     14316     6.95171    8.725677   8.032547   0.334745   7.997549  
2012            15120     14316     7.454484   9.675838   8.454038   0.487178   8.429597  
2013            15120     14316     7.104033   8.165      7.7667     0.17482    7.785548  
2014            15120     14316     7.657322   11.111484  9.214074   0.794802   9.155984  
2015            15120     14316     8.102775   9.977097   8.963356   0.370349   8.960758  
2016            15120     14316     7.005677   9.618032   8.71635    0.501091   8.861355  
2017            15120     14316     7.185323   9.582613   8.562088   0.376474   8.679468  
2018            15120     14316     7.963065   9.550355   8.826612   0.28697    8.83042   
2019            15120     14316     7.707097   8.916162   8.146924   0.182422   8.165403  
2020            15120     14316     7.663097   9.798806   8.553368   0.451094   8.419323  
2021            15120     14316     7.339581   10.147419  8.488371   0.56211    8.371645  
2022            15120     14316     6.840484   8.452678   7.769876   0.353286   7.774984  
2023            15120     14316     7.797167   10.262667  9.01682    0.53501    8.936683