Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            890       875       28.875366  29.373034  29.078328  0.10745    29.047167 
2008            890       875       27.189566  27.425699  27.303608  0.047887   27.296734 
2009            890       875       28.646601  29.032299  28.90546   0.097478   28.923166 
2010            890       875       28.996166  29.295666  29.108751  0.05597    29.100067 
2011            890       875       28.240034  28.579268  28.439438  0.068499   28.454567 
2012            890       875       28.048866  28.255501  28.15887   0.052359   28.1583   
2013            890       875       29.2295    29.495733  29.367669  0.056255   29.363834 
2014            890       875       29.092899  29.625834  29.309054  0.134903   29.288767 
2015            890       875       28.039967  28.478434  28.236568  0.102292   28.228666 
2016            890       875       29.468533  29.704666  29.632084  0.038036   29.6346   
2017            890       875       28.308233  28.630333  28.467664  0.087236   28.457567 
2018            890       875       29.520866  29.804701  29.679985  0.052738   29.682167 
2019            890       875       29.492233  29.7204    29.631891  0.042895   29.632    
2020            890       875       28.384966  28.649467  28.535034  0.057077   28.541933 
2021            890       875       28.087366  28.311666  28.183872  0.048115   28.173233 
2022            890       875       29.133566  29.559866  29.330409  0.087555   29.315599 
2023            890       875       29.959133  30.582966  30.343211  0.131465   30.359699