Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            104       66        14.906226  15.469677  15.254448  0.132644   15.289161 
2008            104       66        15.887936  16.346775  16.170303  0.112757   16.198936 
2009            104       66        13.643161  14.220967  14.010241  0.140867   14.032467 
2010            104       66        11.309484  11.748096  11.587192  0.104407   11.600532 
2011            104       66        15.241677  15.638904  15.496557  0.093523   15.511516 
2012            104       66        17.59758   18.034967  17.878548  0.104429   17.908565 
2013            104       66        12.425968  13.279355  12.962886  0.201273   12.990419 
2014            104       66        10.789806  11.645678  11.335341  0.219151   11.374758 
2015            104       66        11.973871  12.766968  12.479102  0.197167   12.526323 
2016            104       66        15.934613  16.512451  16.28929   0.140183   16.326678 
2017            104       66        15.440613  16.002516  15.789386  0.142823   15.811855 
2018            104       66        14.537     15.138806  14.92178   0.143481   14.942194 
2019            104       66        14.864613  15.499968  15.260241  0.151076   15.282064 
2020            104       66        16.139484  16.631033  16.451797  0.11946    16.483436 
2021            104       66        15.193548  15.390613  15.325805  0.050215   15.340064 
2022            104       66        15.581194  16.132967  15.931471  0.131108   15.954209 
2023            104       66        17.459904  17.885612  17.723778  0.105047   17.743113