Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            2800      2779      29.540234  30.242634  29.858729  0.168134   29.896734 
2008            2800      2779      28.7791    29.143133  29.012381  0.0781     29.032034 
2009            2800      2779      29.968134  30.436167  30.259348  0.104971   30.2796   
2010            2800      2779      29.336733  29.753099  29.526706  0.090062   29.5313   
2011            2800      2779      30.261766  30.761234  30.557068  0.108099   30.591766 
2012            2800      2779      29.486666  29.924232  29.743193  0.111082   29.761    
2013            2800      2779      29.1348    29.683167  29.362106  0.116709   29.369633 
2014            2800      2779      29.562666  29.957167  29.789451  0.088474   29.8088   
2015            2800      2779      30.190399  30.681734  30.472392  0.101996   30.485666 
2016            2800      2779      29.968233  30.633934  30.324235  0.143957   30.331301 
2017            2800      2779      29.842867  30.482201  30.248042  0.165675   30.281401 
2018            2800      2779      29.910633  30.3137    30.160463  0.095502   30.186132 
2019            2800      2779      29.4501    29.839567  29.625747  0.071393   29.636534 
2020            2800      2779      29.652466  30.0488    29.859569  0.091126   29.858067 
2021            2800      2779      30.268633  30.605434  30.483897  0.073867   30.499233 
2022            2800      2779      30.544233  30.978399  30.823531  0.094825   30.8377   
2023            2800      2779      30.244633  30.784     30.594981  0.149104   30.661167