Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            120       53        16.296064  16.969322  16.699933  0.143568   16.701387 
2008            120       53        12.341839  13.226742  12.852958  0.192741   12.86342  
2009            120       53        13.970839  14.711839  14.412636  0.155401   14.426193 
2010            120       53        11.582871  12.432355  12.074606  0.185212   12.08471  
2011            120       53        15.086806  16.023193  15.635542  0.201633   15.64071  
2012            120       53        13.316355  14.276936  13.889043  0.200979   13.903032 
2013            120       53        13.864516  14.810839  14.43123   0.198647   14.449967 
2014            120       53        13.379193  14.242871  13.903444  0.179181   13.924709 
2015            120       53        16.949741  17.658386  17.387489  0.151216   17.394613 
2016            120       53        15.261806  16.193968  15.832163  0.195216   15.846484 
2017            120       53        14.546162  15.430097  15.101914  0.184844   15.134193 
2018            120       53        13.327968  14.185645  13.845731  0.176944   13.86229  
2019            120       53        14.402452  15.161387  14.872983  0.154645   14.891291 
2020            120       53        13.917419  14.59371   14.33404   0.138379   14.350388 
2021            120       53        15.989     16.529968  16.341177  0.111811   16.36171  
2022            120       53        14.66329   15.466355  15.138131  0.173564   15.140387 
2023            120       53        13.953667  14.626801  14.370011  0.138962   14.3894