Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1706      1017      29.176323  29.519323  29.352165  0.09571    29.327614 
2008            1706      1017      29.895548  30.490709  30.204093  0.098059   30.19171  
2009            1706      1017      29.817484  30.069645  29.920472  0.055449   29.912516 
2010            1706      1017      29.699709  29.87171   29.789331  0.036405   29.791128 
2011            1706      1017      30.181129  30.412935  30.287684  0.048332   30.292322 
2012            1706      1017      29.69429   29.944323  29.80313   0.050416   29.807549 
2013            1706      1017      29.025032  29.282806  29.139278  0.055207   29.122936 
2014            1706      1017      29.643709  29.973162  29.782079  0.082227   29.77529  
2015            1706      1017      30.465902  30.781775  30.645598  0.078113   30.656645 
2016            1706      1017      30.542     30.881838  30.680049  0.090165   30.672838 
2017            1706      1017      29.858194  30.209452  30.016209  0.067676   30.003613 
2018            1706      1017      30.103355  30.38629   30.235593  0.05524    30.220741 
2019            1706      1017      29.365419  29.59771   29.483157  0.050797   29.483871 
2020            1706      1017      29.347549  29.795807  29.663701  0.089648   29.689646 
2021            1706      1017      29.524387  29.874355  29.725652  0.068267   29.727516 
2022            1706      1017      30.431549  30.613388  30.544975  0.041129   30.555065 
2023            1706      1017      31.42071   31.790194  31.573572  0.089981   31.557129