Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            274       245       7.830192   8.02514    7.925469   0.039324   7.922816  
2008            274       245       7.939123   8.145678   8.052947   0.040812   8.054025  
2009            274       245       7.702644   8.028211   7.878695   0.073382   7.869137  
2010            274       245       8.704905   8.933778   8.829611   0.047581   8.827621  
2011            274       245       8.406393   8.651808   8.531705   0.053886   8.527698  
2012            274       245       9.31988    9.708967   9.536073   0.087862   9.522386  
2013            274       245       8.606983   8.964564   8.808746   0.074053   8.802556  
2014            274       245       7.977208   8.471699   8.245991   0.114484   8.231929  
2015            274       245       7.567603   8.13049    7.865526   0.133212   7.841887  
2016            274       245       8.698618   9.184686   8.958589   0.109407   8.937896  
2017            274       245       8.209507   8.655099   8.452699   0.100151   8.436358  
2018            274       245       7.996332   8.665392   8.357191   0.160002   8.334474  
2019            274       245       7.82671    8.13546    7.994285   0.06698    7.990814  
2020            274       245       8.968143   9.156035   9.074697   0.035059   9.076694  
2021            274       245       9.303204   9.814113   9.582505   0.108052   9.571711  
2022            274       245       8.563066   9.306934   8.953324   0.178031   8.920761  
2023            274       245       9.155614   9.396124   9.255087   0.04755    9.252416