Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            598       598       3.026452   4.104484   3.422467   0.225244   3.38371   
2008            598       598       4.481226   5.009774   4.787856   0.101448   4.800387  
2009            598       598       3.486677   4.162549   3.843683   0.153441   3.860532  
2010            598       598       3.960355   4.305193   4.173284   0.081053   4.183145  
2011            598       598       3.423839   3.895323   3.730009   0.104643   3.732597  
2012            598       598       7.037065   7.675484   7.344225   0.133714   7.352     
2013            598       598       3.791645   4.416677   4.09705    0.130772   4.097129  
2014            598       598       2.266871   3.418613   2.721178   0.222552   2.693145  
2015            598       598       1.336677   2.083194   1.620487   0.161851   1.585161  
2016            598       598       5.413387   5.943807   5.681168   0.114776   5.677242  
2017            598       598       3.810258   4.530677   4.030576   0.155373   3.979468  
2018            598       598       3.906387   4.293613   4.115138   0.079865   4.120564  
2019            598       598       3.624806   4.55029    4.002995   0.195114   3.969371  
2020            598       598       6.100162   6.604226   6.39109    0.113096   6.405081  
2021            598       598       3.846097   4.552322   4.135997   0.137835   4.110548  
2022            598       598       4.896774   5.523452   5.177024   0.139988   5.181516  
2023            598       598       5.333129   5.802645   5.586918   0.100968   5.590919