Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            890       875       29.586098  29.851257  29.728616  0.051996   29.722612 
2008            890       875       30.331291  30.712032  30.5074    0.111232   30.475872 
2009            890       875       29.45558   29.811968  29.685768  0.105606   29.721291 
2010            890       875       29.821096  30.019161  29.908189  0.043823   29.903097 
2011            890       875       30.445194  30.611742  30.540414  0.035742   30.540613 
2012            890       875       29.820614  30.167032  30.069568  0.075523   30.082773 
2013            890       875       29.087517  29.321321  29.22884   0.043933   29.231613 
2014            890       875       29.737419  29.988646  29.898668  0.049369   29.903709 
2015            890       875       30.411871  30.813322  30.693816  0.091549   30.711903 
2016            890       875       30.612936  30.85729   30.761284  0.065823   30.770388 
2017            890       875       30.162258  30.359354  30.278907  0.036933   30.279419 
2018            890       875       29.872807  30.179871  30.009724  0.093037   30.015322 
2019            890       875       29.578516  29.831387  29.707087  0.057887   29.709742 
2020            890       875       29.209517  29.502548  29.418404  0.059971   29.433838 
2021            890       875       29.594227  29.768904  29.67233   0.031322   29.669291 
2022            890       875       30.725     31.031937  30.895748  0.064235   30.901096 
2023            890       875       31.248678  31.746355  31.542339  0.120546   31.571354