Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            256       223       28.862267  29.248966  29.070141  0.090694   29.080799 
2008            256       223       27.812366  28.235201  27.984996  0.099278   27.9814   
2009            256       223       28.196934  28.474333  28.347077  0.06268    28.357834 
2010            256       223       29.157433  29.273266  29.208962  0.030499   29.207466 
2011            256       223       28.029333  28.215733  28.142153  0.037774   28.146566 
2012            256       223       27.748766  27.9592    27.845982  0.064347   27.857367 
2013            256       223       29.106834  29.422634  29.23006   0.081931   29.2342   
2014            256       223       29.217199  29.548834  29.453665  0.077539   29.481001 
2015            256       223       28.224367  28.566866  28.390654  0.071067   28.383499 
2016            256       223       29.1451    29.354366  29.236595  0.058158   29.249466 
2017            256       223       28.028233  28.229633  28.1484    0.043049   28.155399 
2018            256       223       29.472233  29.605301  29.518498  0.041468   29.500633 
2019            256       223       29.289766  29.405399  29.341828  0.029006   29.343033 
2020            256       223       27.783899  28.089767  27.976846  0.059403   27.982834 
2021            256       223       27.753799  28.2274    28.030309  0.102976   28.041599 
2022            256       223       28.914066  29.287767  29.100666  0.086551   29.106266 
2023            256       223       28.749966  29.463867  29.117701  0.174034   29.154833