Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1380      1279      11.998393  14.964964  13.136949  0.687839   13.002036 
2008            1380      1279      14.187828  16.044863  14.964431  0.428391   14.965586 
2009            1380      1279      13.591     15.563857  14.582152  0.488056   14.639821 
2010            1380      1279      9.740679   12.633572  11.022807  0.747622   11.030536 
2011            1380      1279      9.97975    12.956786  11.143161  0.691444   11.128786 
2012            1380      1279      14.450862  15.938311  15.108321  0.377414   15.055758 
2013            1380      1279      14.722857  16.206678  15.486733  0.355939   15.442429 
2014            1380      1279      9.595535   13.279786  10.966197  0.86933    10.911107 
2015            1380      1279      12.635858  14.386965  13.488766  0.43295    13.504357 
2016            1380      1279      14.358     15.950138  15.1038    0.403374   15.113931 
2017            1380      1279      16.586786  17.719606  17.178469  0.241928   17.197144 
2018            1380      1279      13.316964  16.908072  14.662447  0.844511   14.509822 
2019            1380      1279      12.931071  15.207108  14.061661  0.60162    14.10125  
2020            1380      1279      14.133517  15.636552  14.818787  0.345367   14.787689 
2021            1380      1279      12.571193  13.465693  13.106226  0.228582   13.157654 
2022            1380      1279      11.678036  12.979821  12.419202  0.310081   12.425322 
2023            1380      1279      14.767857  15.623465  15.230265  0.165833   15.208322