Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            295       221       28.452833  28.526466  28.492596  0.02422    28.489134 
2008            295       221       29.200367  29.395233  29.315086  0.046436   29.321632 
2009            295       221       29.1516    29.274467  29.223689  0.036305   29.2379   
2010            295       221       30.142134  30.241199  30.179876  0.028494   30.171234 
2011            295       221       29.608734  29.824301  29.674081  0.035211   29.675066 
2012            295       221       29.277767  29.461666  29.378748  0.053987   29.3743   
2013            295       221       29.661934  29.819201  29.754795  0.03964    29.758467 
2014            295       221       28.479033  28.838133  28.649596  0.093629   28.643766 
2015            295       221       29.427933  29.630733  29.508715  0.045652   29.510567 
2016            295       221       29.163366  29.371901  29.20251   0.037848   29.189167 
2017            295       221       27.7913    27.903366  27.860126  0.029867   27.865734 
2018            295       221       29.803734  29.8815    29.847443  0.018801   29.848667 
2019            295       221       29.131866  29.330034  29.194916  0.04431    29.194033 
2020            295       221       28.5797    28.784033  28.671751  0.052133   28.667334 
2021            295       221       28.861366  29.011133  28.924765  0.031985   28.931534 
2022            295       221       30.194334  30.2831    30.227905  0.021963   30.2188   
2023            295       221       29.848066  30.029867  29.972582  0.0433     29.987133