Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            117       54        14.819258  15.295774  15.133223  0.117716   15.156307 
2008            117       54        15.772323  16.180645  16.046193  0.104465   16.073968 
2009            117       54        13.679355  14.244258  14.037923  0.141265   14.06829  
2010            117       54        11.354387  11.710065  11.582691  0.089672   11.602726 
2011            117       54        15.260097  15.629032  15.49937   0.092765   15.521532 
2012            117       54        17.471935  17.848839  17.739234  0.089368   17.767452 
2013            117       54        12.314     13.165742  12.867457  0.212572   12.909016 
2014            117       54        11.077226  12.015839  11.604754  0.246431   11.642419 
2015            117       54        12.183419  13.002903  12.659985  0.213733   12.698145 
2016            117       54        15.734838  16.227259  16.073032  0.117738   16.100194 
2017            117       54        15.407613  16.002419  15.781667  0.151258   15.805258 
2018            117       54        14.517129  15.103839  14.892982  0.145031   14.918403 
2019            117       54        14.859258  15.499548  15.256692  0.161896   15.285129 
2020            117       54        16.033194  16.424194  16.307231  0.095661   16.335065 
2021            117       54        15.237774  15.388484  15.35274   0.039471   15.371048 
2022            117       54        15.604613  16.152807  15.947226  0.139506   15.97429  
2023            117       54        17.314032  17.711645  17.594222  0.08986    17.624597