Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            124       24        18.505266  18.574234  18.543906  0.0187     18.545366 
2008            124       24        18.443001  18.5117    18.480035  0.019882   18.47945  
2009            124       24        18.454134  18.534567  18.505149  0.02359    18.509533 
2010            124       24        18.5494    18.627666  18.600363  0.021393   18.60625  
2011            124       24        20.462103  20.549379  20.522968  0.02275    20.528896 
2012            124       24        21.046499  21.086267  21.066947  0.01026    21.068049 
2013            124       24        17.491467  17.5903    17.553538  0.024449   17.554483 
2014            124       24        18.194901  18.2981    18.259     0.02572    18.260201 
2015            124       24        19.151234  19.267666  19.22268   0.030474   19.2282   
2016            124       24        19.112867  19.205034  19.179485  0.023459   19.186067 
2017            124       24        20.7372    20.820499  20.78523   0.022723   20.78965  
2018            124       24        17.5527    17.640432  17.609964  0.021395   17.611051 
2019            124       24        18.73      18.847267  18.804353  0.030474   18.806517 
2020            124       24        20.217667  20.269367  20.248329  0.014224   20.248684 
2021            124       24        18.816334  18.883867  18.861722  0.019829   18.86765  
2022            124       24        20.0012    20.084433  20.05289   0.021723   20.05575  
2023            124       24        20.172344  20.263966  20.232728  0.022207   20.237723