Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            138       95        8.477161   8.880548   8.698288   0.111167   8.713064  
2008            138       95        8.401032   8.751967   8.583412   0.109135   8.591323  
2009            138       95        8.702387   8.927065   8.817869   0.049724   8.808354  
2010            138       95        9.184645   9.396452   9.297043   0.052129   9.297129  
2011            138       95        8.425967   8.608581   8.527228   0.046398   8.530484  
2012            138       95        10.394322  10.541806  10.450755  0.035542   10.442484 
2013            138       95        9.207322   9.354871   9.27438    0.03829    9.273226  
2014            138       95        8.155807   8.373645   8.244137   0.053495   8.235291  
2015            138       95        7.792065   7.991226   7.898977   0.058211   7.907742  
2016            138       95        8.715871   8.787387   8.744142   0.0189     8.742806  
2017            138       95        7.764      8.013645   7.898657   0.061173   7.901774  
2018            138       95        9.662839   9.913548   9.790851   0.056119   9.781033  
2019            138       95        7.964903   8.088484   8.013328   0.034668   7.99958   
2020            138       95        8.25329    8.579678   8.416746   0.090695   8.406     
2021            138       95        9.432355   9.592355   9.500893   0.041216   9.489033  
2022            138       95        9.364      9.639742   9.501995   0.076316   9.488742  
2023            138       95        9.572194   9.820065   9.668866   0.072412   9.645032