Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1213      941       13.161133  14.0859    13.73772   0.237956   13.815634 
2008            1213      941       12.976867  13.4129    13.291875  0.103487   13.3259   
2009            1213      941       12.4759    13.097633  12.924522  0.14852    12.9735   
2010            1213      941       13.076933  13.7333    13.476313  0.158006   13.476233 
2011            1213      941       12.532933  13.0334    12.86266   0.121078   12.8617   
2012            1213      941       13.599466  14.3566    14.098268  0.214809   14.146133 
2013            1213      941       11.913933  12.626766  12.434139  0.200394   12.536767 
2014            1213      941       14.850667  15.3303    15.146006  0.089772   15.1668   
2015            1213      941       13.0414    14.184867  13.820041  0.283578   13.9599   
2016            1213      941       14.415934  15.082267  14.868394  0.130005   14.8682   
2017            1213      941       13.195     14.369534  13.93634   0.316978   13.9326   
2018            1213      941       12.659866  13.786133  13.315912  0.332107   13.361333 
2019            1213      941       12.531667  13.581266  13.158628  0.346735   13.098    
2020            1213      941       13.558534  15.030133  14.135317  0.216996   14.147467 
2021            1213      941       14.670366  15.850866  15.339374  0.295763   15.281433 
2022            1213      941       12.076655  13.102931  12.848772  0.211114   12.899448 
2023            1213      941       14.495733  16.157333  15.43943   0.499133   15.241934