Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            309       273       11.464967  12.2432    11.928735  0.221843   11.9863   
2008            309       273       12.302834  12.840533  12.624273  0.116718   12.6403   
2009            309       273       11.2068    11.678133  11.517637  0.090897   11.5331   
2010            309       273       12.457666  13.214933  12.957016  0.183501   13.002033 
2011            309       273       11.903267  12.433167  12.228014  0.140879   12.256066 
2012            309       273       13.046933  13.809466  13.555703  0.181572   13.577167 
2013            309       273       12.3013    12.938334  12.762499  0.115752   12.784233 
2014            309       273       12.135366  12.9189    12.599496  0.182472   12.6265   
2015            309       273       10.802033  11.4545    11.215731  0.126128   11.224733 
2016            309       273       12.213833  13.027933  12.809125  0.171752   12.852867 
2017            309       273       11.582434  12.4309    12.160694  0.1677     12.183933 
2018            309       273       11.8792    12.673467  12.348471  0.187812   12.381866 
2019            309       273       11.498366  12.074067  11.86104   0.152013   11.901533 
2020            309       273       12.723433  13.358633  13.174072  0.153447   13.2158   
2021            309       273       13.3193    14.024266  13.805639  0.160679   13.839767 
2022            309       273       12.7826    13.5728    13.35609   0.172014   13.400133 
2023            309       273       12.879434  13.407534  13.229468  0.116565   13.2584