Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1080      952       20.100666  20.669033  20.376437  0.124999   20.384768 
2008            1080      952       20.249166  21.1791    20.778457  0.231594   20.812017 
2009            1080      952       19.745667  20.732533  20.314796  0.267725   20.350599 
2010            1080      952       20.678766  21.009201  20.894025  0.082331   20.917966 
2011            1080      952       22.450518  23.031414  22.753443  0.144225   22.779276 
2012            1080      952       22.411499  22.843533  22.649247  0.114628   22.668317 
2013            1080      952       19.498533  20.455133  20.116935  0.264611   20.203067 
2014            1080      952       19.057367  19.7379    19.463159  0.18851    19.512067 
2015            1080      952       21.877501  22.761467  22.404935  0.259806   22.490116 
2016            1080      952       20.038166  21.2253    20.865178  0.305261   20.972016 
2017            1080      952       22.416201  23.0446    22.806054  0.144084   22.816333 
2018            1080      952       19.448967  20.5807    20.181765  0.31182    20.284367 
2019            1080      952       19.786467  20.5616    20.250615  0.210042   20.32675  
2020            1080      952       21.454399  22.339966  21.887414  0.251522   21.918366 
2021            1080      952       19.294966  20.319134  19.874063  0.269736   19.92235  
2022            1080      952       20.083401  21.523701  20.898179  0.405344   20.991983 
2023            1080      952       21.546656  21.924759  21.77008   0.11697    21.807483