Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            3568      3463      10.826     12.649968  11.964926  0.494576   12.126355 
2008            3568      3463      10.338549  13.151484  11.45434   0.71875    11.213258 
2009            3568      3463      10.545677  12.952226  11.881277  0.632013   11.987935 
2010            3568      3463      11.208838  12.735903  12.219448  0.338477   12.289742 
2011            3568      3463      10.738903  13.55829   12.280053  0.806132   12.38942  
2012            3568      3463      12.874613  14.749484  13.797135  0.428493   13.848194 
2013            3568      3463      11.021129  13.423549  12.17193   0.638775   12.193452 
2014            3568      3463      10.280807  12.669645  11.55833   0.612012   11.605064 
2015            3568      3463      10.495709  12.836678  11.703979  0.604867   11.845613 
2016            3568      3463      10.587355  13.156226  11.961946  0.661253   12.031    
2017            3568      3463      11.063709  12.978065  12.033521  0.49439    12.055677 
2018            3568      3463      11.149936  13.448258  12.183281  0.571945   12.165355 
2019            3568      3463      10.894774  12.943709  12.119934  0.517199   12.306839 
2020            3568      3463      10.245581  12.318097  11.281353  0.498525   11.362613 
2021            3568      3463      10.950484  13.181645  12.388893  0.587158   12.643774 
2022            3568      3463      11.623096  13.006839  12.182364  0.333179   12.153871 
2023            3568      3463      12.098968  14.11929   13.242467  0.518918   13.345033