Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1706      1017      28.378233  28.612467  28.476458  0.042563   28.462801 
2008            1706      1017      29.011999  29.522301  29.266506  0.095301   29.252266 
2009            1706      1017      28.882401  29.484467  29.249359  0.095721   29.254868 
2010            1706      1017      29.910967  30.391233  30.257043  0.089101   30.270533 
2011            1706      1017      29.074301  29.7672    29.54842   0.122319   29.571266 
2012            1706      1017      28.8792    29.164433  29.01088   0.063035   29.002266 
2013            1706      1017      29.502966  29.8881    29.733213  0.060402   29.729733 
2014            1706      1017      28.516634  28.987133  28.817146  0.093667   28.835966 
2015            1706      1017      28.876699  29.324234  29.115633  0.076464   29.1029   
2016            1706      1017      29.106634  29.5187    29.341352  0.080493   29.345867 
2017            1706      1017      27.300568  27.750401  27.629923  0.076656   27.6437   
2018            1706      1017      29.843533  30.112566  29.972894  0.054021   29.971233 
2019            1706      1017      29.067133  29.416334  29.30966   0.051859   29.315666 
2020            1706      1017      28.0415    28.768499  28.553326  0.139623   28.571033 
2021            1706      1017      28.011433  28.656366  28.375701  0.111064   28.366467 
2022            1706      1017      30.081367  30.4771    30.358834  0.07853    30.376234 
2023            1706      1017      29.4182    30.053699  29.843226  0.132685   29.874634