Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            559       485       6.6725     10.677     8.262755   1.087716   8.025393  
2008            559       485       7.601345   9.056862   8.358746   0.348763   8.365069  
2009            559       485       5.660678   8.163857   6.729431   0.638509   6.61975   
2010            559       485       3.894893   5.630214   4.560587   0.446168   4.442928  
2011            559       485       5.053822   6.575071   5.663881   0.418741   5.592321  
2012            559       485       8.22931    9.61762    8.891155   0.374313   8.882276  
2013            559       485       7.290429   9.129536   8.091044   0.449104   8.030714  
2014            559       485       4.160786   5.597714   4.862899   0.341357   4.842643  
2015            559       485       2.355964   4.519357   3.052827   0.549604   2.846786  
2016            559       485       6.067414   6.942966   6.533136   0.227838   6.539448  
2017            559       485       7.737571   8.81375    8.230646   0.263237   8.196643  
2018            559       485       5.1125     7.22375    5.96195    0.525235   5.823321  
2019            559       485       6.376071   7.535321   6.899272   0.271767   6.890179  
2020            559       485       7.935655   8.974483   8.371618   0.272158   8.300241  
2021            559       485       5.277154   6.012      5.587437   0.195638   5.564654  
2022            559       485       5.741071   6.100286   5.920535   0.07456    5.91625   
2023            559       485       8.721393   9.166214   8.942768   0.106327   8.943214