Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            598       598       2.670321   4.050286   3.13421    0.329187   3.030536  
2008            598       598       3.489034   4.376655   3.813889   0.214255   3.758793  
2009            598       598       2.461714   3.970929   3.01495    0.341052   2.930518  
2010            598       598       2.388214   2.956643   2.570176   0.113987   2.553     
2011            598       598       1.710964   2.826393   2.14139    0.273685   2.083768  
2012            598       598       5.591793   7.090586   6.172772   0.320549   6.118414  
2013            598       598       3.412643   4.44       3.782291   0.240971   3.719786  
2014            598       598       1.979571   3.505143   2.527692   0.357155   2.438357  
2015            598       598       0.911286   2.184786   1.403195   0.282861   1.336661  
2016            598       598       4.460621   5.476621   4.850558   0.225492   4.804483  
2017            598       598       4.155214   4.920821   4.439159   0.164371   4.40625   
2018            598       598       3.246357   4.248893   3.649437   0.240751   3.584464  
2019            598       598       3.026357   4.259536   3.41386    0.299339   3.334018  
2020            598       598       5.177621   5.847793   5.426106   0.138941   5.388224  
2021            598       598       3.330423   4.408269   3.68847    0.234045   3.631692  
2022            598       598       3.34475    4.575786   3.75946    0.275435   3.701089  
2023            598       598       5.043857   5.983964   5.366956   0.20674    5.321286