Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            309       273       8.213258   8.598935   8.426998   0.095561   8.413161  
2008            309       273       8.081419   8.636484   8.465985   0.140604   8.51271   
2009            309       273       8.072354   8.550323   8.352922   0.139988   8.385226  
2010            309       273       8.712774   9.215612   9.037272   0.128704   9.063291  
2011            309       273       8.006774   8.425194   8.290988   0.10526    8.317225  
2012            309       273       9.904581   10.311742  10.16727   0.104694   10.190839 
2013            309       273       8.732903   9.35429    9.108844   0.177092   9.134774  
2014            309       273       7.678645   7.993161   7.875445   0.086413   7.894452  
2015            309       273       7.459839   7.873645   7.738233   0.114087   7.779032  
2016            309       273       8.463451   8.721774   8.636163   0.070002   8.652032  
2017            309       273       7.263806   7.821613   7.599603   0.105011   7.598581  
2018            309       273       9.107677   9.520904   9.366641   0.112891   9.39758   
2019            309       273       7.763871   8.059548   7.951359   0.078578   7.964097  
2020            309       273       8.048129   8.465033   8.2476     0.10761    8.226322  
2021            309       273       9.004065   9.38       9.249412   0.105058   9.280258  
2022            309       273       9.016258   9.526871   9.277367   0.120698   9.276742  
2023            309       273       9.140194   9.682096   9.472387   0.134958   9.501904