Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            120       53        21.338255  21.661268  21.536945  0.067006   21.54315  
2008            120       53        20.22933   20.608328  20.447552  0.086455   20.457376 
2009            120       53        20.237183  20.67943   20.492005  0.106295   20.511333 
2010            120       53        20.242104  20.570509  20.433349  0.073921   20.436811 
2011            120       53        20.880184  21.226093  21.083793  0.077801   21.089664 
2012            120       53        21.551525  21.872311  21.748826  0.070687   21.75421  
2013            120       53        20.759716  21.179846  21.010447  0.090907   21.015701 
2014            120       53        20.255827  20.708666  20.528355  0.096206   20.533627 
2015            120       53        21.012121  21.412556  21.257524  0.086093   21.262175 
2016            120       53        21.669445  22.060356  21.909671  0.082926   21.918341 
2017            120       53        21.830711  22.171526  22.03877   0.072163   22.044874 
2018            120       53        21.005098  21.395948  21.238586  0.085869   21.245548 
2019            120       53        21.713243  22.050978  21.921128  0.072145   21.925121 
2020            120       53        21.789341  22.148033  22.016053  0.078348   22.025013 
2021            120       53        21.171459  21.40571   21.321176  0.049536   21.327732 
2022            120       53        21.58691   21.943127  21.804694  0.077126   21.806992 
2023            120       53        21.5123    21.849382  21.721968  0.074562   21.728498