Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            295       221       18.212807  18.674871  18.463384  0.097178   18.485483 
2008            295       221       16.932549  17.549032  17.211068  0.115085   17.199032 
2009            295       221       17.980097  18.638193  18.331698  0.131851   18.364935 
2010            295       221       14.156     14.603129  14.378583  0.099046   14.394742 
2011            295       221       18.540161  18.87542   18.699521  0.059918   18.703871 
2012            295       221       20.475033  20.734613  20.640656  0.061603   20.657064 
2013            295       221       16.160612  16.824387  16.473979  0.136033   16.476904 
2014            295       221       14.532419  15.236613  14.887948  0.15043    14.912032 
2015            295       221       16.046677  16.973     16.595013  0.225963   16.671    
2016            295       221       18.861515  19.244097  19.083305  0.088053   19.11071  
2017            295       221       19.209709  19.795225  19.449717  0.121114   19.439678 
2018            295       221       19.38158   20.015806  19.625452  0.11533    19.622871 
2019            295       221       16.29171   17.125839  16.746204  0.196798   16.798098 
2020            295       221       19.81287   19.983839  19.926419  0.043685   19.940161 
2021            295       221       17.262386  17.626097  17.457897  0.073516   17.45129  
2022            295       221       16.495258  17.119549  16.85634   0.131828   16.89584  
2023            295       221       20.713064  21.492226  21.14851   0.173253   21.15616