Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1073      658       2.516286   3.89325    3.007444   0.355827   2.879732  
2008            1073      658       3.377793   4.840931   3.996698   0.34613    3.912586  
2009            1073      658       1.82775    3.63875    2.74543    0.435689   2.736482  
2010            1073      658       2.313857   3.483929   2.63227    0.273863   2.543214  
2011            1073      658       1.663036   2.929393   2.271297   0.28573    2.226518  
2012            1073      658       5.851552   6.997345   6.301081   0.273178   6.205776  
2013            1073      658       3.844643   5.143714   4.317586   0.310454   4.217036  
2014            1073      658       1.5695     2.693      1.982605   0.287221   1.862821  
2015            1073      658       0.818643   2.085714   1.337477   0.266784   1.280411  
2016            1073      658       4.360172   5.375552   4.828083   0.216983   4.776776  
2017            1073      658       4.312821   5.37775    4.862021   0.21372    4.808768  
2018            1073      658       2.982143   4.040143   3.480294   0.221639   3.446732  
2019            1073      658       3.024536   4.299786   3.622548   0.283318   3.547982  
2020            1073      658       4.833931   5.940586   5.419152   0.223228   5.395396  
2021            1073      658       2.033577   3.372385   2.550614   0.23851    2.521404  
2022            1073      658       2.465214   3.939393   3.103102   0.280555   3.062625  
2023            1073      658       4.696786   6.169107   5.48395    0.273834   5.453661