Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            919       837       27.387129  27.899097  27.721564  0.115044   27.750162 
2008            919       837       25.984936  26.540903  26.314338  0.116466   26.329645 
2009            919       837       28.074549  28.682259  28.416949  0.18435    28.419033 
2010            919       837       25.421936  25.87929   25.680898  0.09902    25.685354 
2011            919       837       25.345161  26.120646  25.788823  0.167365   25.806581 
2012            919       837       26.582678  27.150999  26.943638  0.124724   26.970839 
2013            919       837       26.889065  27.594194  27.267576  0.155502   27.290323 
2014            919       837       26.33358   27.067839  26.75305   0.156304   26.752064 
2015            919       837       26.469097  27.164677  26.847265  0.135539   26.841516 
2016            919       837       26.068743  26.524225  26.313156  0.073333   26.312935 
2017            919       837       26.957355  27.539968  27.271485  0.120064   27.275227 
2018            919       837       27.715935  28.037775  27.827933  0.073068   27.803709 
2019            919       837       27.563581  28.230452  27.959819  0.149559   27.96829  
2020            919       837       27.869549  28.203838  28.05347   0.093312   28.06584  
2021            919       837       27.771097  28.324322  28.001283  0.118496   27.996065 
2022            919       837       25.446451  26.249453  25.906617  0.171725   25.933935 
2023            919       837       26.138065  27.030096  26.656192  0.188544   26.693548