Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            94        75        15.885742  16.527678  16.31979   0.131449   16.303226 
2008            94        75        16.543419  16.996033  16.84533   0.086208   16.834517 
2009            94        75        13.213581  14.005742  13.795558  0.147577   13.834032 
2010            94        75        11.573677  12.208387  12.010856  0.114938   12.002322 
2011            94        75        15.738032  16.21142   16.059506  0.091621   16.049774 
2012            94        75        18.133871  18.713387  18.51723   0.121123   18.50316  
2013            94        75        13.227742  14.095097  13.825261  0.160485   13.815484 
2014            94        75        11.341516  12.434742  12.086552  0.201294   12.064065 
2015            94        75        12.650162  13.698548  13.369434  0.196083   13.355871 
2016            94        75        16.51771   17.187387  16.987006  0.117826   16.986225 
2017            94        75        16.125193  16.764645  16.521287  0.12642    16.501032 
2018            94        75        14.776774  15.479516  15.246869  0.132003   15.227194 
2019            94        75        15.377     16.059032  15.829117  0.133935   15.819581 
2020            94        75        17.056967  17.634064  17.390466  0.136549   17.353968 
2021            94        75        15.554548  15.860162  15.753138  0.059668   15.746967 
2022            94        75        16.151291  16.850613  16.620152  0.129562   16.599741 
2023            94        75        18.091227  18.40284   18.263107  0.085639   18.252903