Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1073      658       12.4753    12.808534  12.554971  0.071385   12.531117 
2008            1073      658       11.560534  12.244133  11.805288  0.151312   11.78755  
2009            1073      658       12.314834  12.831433  12.479603  0.12045    12.446466 
2010            1073      658       11.369833  12.1208    11.566118  0.195403   11.501017 
2011            1073      658       12.0817    12.6722    12.301549  0.14262    12.27075  
2012            1073      658       11.2599    12.1161    11.543084  0.213362   11.481017 
2013            1073      658       12.0114    12.608233  12.216812  0.137959   12.183217 
2014            1073      658       11.9038    12.8984    12.254087  0.255381   12.168633 
2015            1073      658       13.337067  14.0313    13.588232  0.181274   13.530517 
2016            1073      658       12.7666    13.651067  13.034254  0.225421   12.954567 
2017            1073      658       13.188566  13.919     13.476216  0.172576   13.4454   
2018            1073      658       11.094533  11.898566  11.29489   0.158358   11.238133 
2019            1073      658       12.0419    13.160067  12.392034  0.276039   12.324934 
2020            1073      658       12.827467  13.811733  13.118807  0.250769   13.038583 
2021            1073      658       12.977266  14.200666  13.379195  0.29249    13.3054   
2022            1073      658       13.004966  14.042759  13.370137  0.261878   13.299017 
2023            1073      658       11.8683    13.3125    12.385623  0.370489   12.334517