Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            94        75        15.844097  16.679935  16.431054  0.145592   16.445904 
2008            94        75        11.885871  12.944355  12.652166  0.194691   12.702517 
2009            94        75        13.476355  14.374129  14.111256  0.155445   14.129097 
2010            94        75        11.124774  12.147194  11.856652  0.184165   11.901387 
2011            94        75        14.507807  15.65071   15.314542  0.19902    15.340677 
2012            94        75        12.657097  13.794161  13.44733   0.198375   13.46129  
2013            94        75        13.207903  14.361645  14.017007  0.200151   14.035581 
2014            94        75        12.739516  13.829774  13.50837   0.188867   13.524775 
2015            94        75        16.421227  17.343678  17.057123  0.160977   17.061871 
2016            94        75        14.555936  15.726516  15.362578  0.207152   15.366581 
2017            94        75        13.794032  14.781516  14.44951   0.192518   14.439033 
2018            94        75        12.681452  13.799839  13.463939  0.193838   13.473742 
2019            94        75        13.813193  14.765645  14.486681  0.164477   14.499387 
2020            94        75        13.408161  14.306387  14.050515  0.153985   14.077161 
2021            94        75        15.524258  16.19729   15.977116  0.12694    15.960871 
2022            94        75        14.097677  15.129387  14.798264  0.18059    14.800742 
2023            94        75        13.4143    14.2841    14.003376  0.157023   13.9922