Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            300       271       12.931233  13.1801    13.074141  0.050426   13.0778   
2008            300       271       11.660067  11.989034  11.845698  0.061923   11.8518   
2009            300       271       12.777     12.955334  12.887149  0.036762   12.8927   
2010            300       271       12.218166  12.495334  12.375189  0.055824   12.3784   
2011            300       271       12.513766  12.799467  12.674536  0.062841   12.672367 
2012            300       271       11.743067  12.145667  11.996672  0.090683   12.0156   
2013            300       271       12.417867  12.719033  12.589531  0.056832   12.592566 
2014            300       271       12.2965    12.764234  12.569181  0.114296   12.590366 
2015            300       271       13.9109    14.245867  14.102872  0.063702   14.111934 
2016            300       271       13.1748    13.552667  13.334587  0.082819   13.317833 
2017            300       271       13.613667  13.8226    13.718343  0.039797   13.718667 
2018            300       271       12.1906    12.7427    12.526844  0.104364   12.5342   
2019            300       271       12.681933  13.087434  12.905121  0.100112   12.9041   
2020            300       271       13.701933  14.113466  13.889504  0.086485   13.866734 
2021            300       271       13.359333  14.152833  13.799053  0.203455   13.792867 
2022            300       271       13.753931  13.972241  13.869624  0.043119   13.870862 
2023            300       271       13.057134  13.444333  13.274472  0.074497   13.277333