Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            66        42        13.753134  14.059033  13.908977  0.078448   13.913517 
2008            66        42        12.2979    12.5639    12.431898  0.070906   12.435017 
2009            66        42        13.691     13.901667  13.801559  0.054504   13.804033 
2010            66        42        12.992467  13.202233  13.109856  0.045042   13.10645  
2011            66        42        13.175834  13.391467  13.283446  0.053737   13.284417 
2012            66        42        11.731367  11.9377    11.840328  0.050228   11.839717 
2013            66        42        12.832967  13.096233  12.977721  0.060261   12.973317 
2014            66        42        12.973833  13.250834  13.12925   0.066003   13.127083 
2015            66        42        14.9038    15.1183    15.040069  0.043422   15.0391   
2016            66        42        13.970134  14.130567  14.064696  0.0372     14.064716 
2017            66        42        14.491533  14.731566  14.649693  0.048558   14.651883 
2018            66        42        13.371834  13.625566  13.500379  0.065303   13.504083 
2019            66        42        13.542367  13.827833  13.682922  0.075109   13.684967 
2020            66        42        15.299433  15.583234  15.477036  0.077233   15.494816 
2021            66        42        13.8189    14.1532    14.012805  0.074432   14.01005  
2022            66        42        14.551793  14.773552  14.683186  0.0522     14.681862 
2023            66        42        14.056933  14.343766  14.242298  0.056053   14.246533