Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            309       273       3.820033   4.153767   4.030156   0.081073   4.0377    
2008            309       273       5.319633   5.742733   5.615118   0.097491   5.640533  
2009            309       273       4.7034     5.027467   4.901338   0.08791    4.9278    
2010            309       273       6.2938     6.634733   6.49701    0.089913   6.523033  
2011            309       273       4.634103   4.842655   4.781573   0.044695   4.792207  
2012            309       273       6.1797     6.436033   6.356378   0.066249   6.3744    
2013            309       273       5.5426     5.887433   5.772063   0.084027   5.7891    
2014            309       273       3.5794     4.050233   3.912696   0.109703   3.934367  
2015            309       273       3.381767   3.9078     3.762158   0.115237   3.793467  
2016            309       273       5.184      5.512667   5.393484   0.080168   5.3891    
2017            309       273       4.882967   5.3065     5.131004   0.084498   5.1292    
2018            309       273       4.752666   4.975234   4.920805   0.041744   4.934333  
2019            309       273       4.021      4.3952     4.327925   0.067965   4.347434  
2020            309       273       5.206433   5.3408     5.282828   0.035219   5.286067  
2021            309       273       5.852567   6.1744     6.021359   0.091525   6.013166  
2022            309       273       5.248233   5.4856     5.400399   0.063341   5.4134    
2023            309       273       5.995241   6.142103   6.0859     0.034167   6.091552