Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            131       110       6.137355   6.308839   6.226384   0.039031   6.226064  
2008            131       110       6.448968   6.661      6.549549   0.04743    6.546177  
2009            131       110       7.203645   7.303774   7.245019   0.022583   7.241065  
2010            131       110       6.385193   6.643064   6.508871   0.062834   6.507887  
2011            131       110       8.778387   8.91458    8.856035   0.030255   8.857242  
2012            131       110       8.028516   8.264097   8.141692   0.060019   8.137177  
2013            131       110       6.547129   6.727226   6.632942   0.040538   6.630387  
2014            131       110       6.964161   7.251613   7.099834   0.069405   7.097484  
2015            131       110       8.746871   8.917968   8.82862    0.041468   8.825919  
2016            131       110       8.090968   8.29742    8.198274   0.051453   8.196581  
2017            131       110       7.180871   7.402387   7.279893   0.048506   7.279371  
2018            131       110       6.203742   6.374355   6.276797   0.039552   6.273484  
2019            131       110       6.949323   7.128774   7.044507   0.042532   7.041903  
2020            131       110       6.857065   7.315645   7.089926   0.099374   7.085806  
2021            131       110       8.657935   8.986548   8.838902   0.080088   8.839468  
2022            131       110       7.89542    8.236161   8.076348   0.079016   8.071984  
2023            131       110       7.205566   7.434433   7.325131   0.055673   7.321917