Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            117       54        28.455839  28.659033  28.55725   0.057419   28.555565 
2008            117       54        28.410419  28.564741  28.463606  0.039301   28.456064 
2009            117       54        28.212549  28.334387  28.267898  0.028352   28.265242 
2010            117       54        28.867483  28.983     28.934142  0.030441   28.936532 
2011            117       54        28.973354  29.116161  29.026137  0.033447   29.020209 
2012            117       54        29.379644  29.498323  29.428939  0.029679   29.424629 
2013            117       54        28.498419  28.606291  28.54166   0.024167   28.541129 
2014            117       54        29.278839  29.374193  29.320671  0.02559    29.318581 
2015            117       54        28.11842   28.197742  28.166962  0.019356   28.168822 
2016            117       54        30.324194  30.441032  30.39937   0.031907   30.407258 
2017            117       54        28.941742  29.147097  29.060352  0.04834    29.056823 
2018            117       54        29.51      29.64187   29.579115  0.03147    29.580564 
2019            117       54        29.761065  29.893354  29.823648  0.025672   29.819775 
2020            117       54        29.578871  29.650677  29.621434  0.019709   29.628468 
2021            117       54        28.243742  28.354485  28.293893  0.029519   28.291258 
2022            117       54        29.425903  29.486774  29.452847  0.013017   29.451435 
2023            117       54        29.063097  29.334227  29.220312  0.077323   29.238726