Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            112       58        17.860067  18.282566  18.068194  0.098859   18.070316 
2008            112       58        17.346533  17.684     17.494418  0.079723   17.492583 
2009            112       58        17.496967  17.902233  17.67233   0.09292    17.666167 
2010            112       58        18.047001  18.366966  18.192602  0.075967   18.185317 
2011            112       58        17.988035  18.447001  18.212627  0.104883   18.216    
2012            112       58        19.377367  19.559799  19.459488  0.037644   19.459817 
2013            112       58        16.837866  17.392     17.124466  0.141183   17.12965  
2014            112       58        16.380333  17.250299  16.792174  0.21253    16.788967 
2015            112       58        17.679434  18.441933  18.049267  0.181839   18.051933 
2016            112       58        17.7181    18.202267  17.92397   0.114631   17.918099 
2017            112       58        19.505632  19.932434  19.708015  0.102439   19.704117 
2018            112       58        15.892067  16.628     16.199123  0.174836   16.17655  
2019            112       58        18.058399  18.289133  18.172567  0.05006    18.175934 
2020            112       58        18.994034  19.364901  19.165964  0.081662   19.166416 
2021            112       58        17.572701  17.684     17.609838  0.024601   17.606649 
2022            112       58        18.774401  19.0986    18.925818  0.075016   18.924217 
2023            112       58        19.224379  19.577414  19.391928  0.074795   19.397327