Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            309       273       14.270233  14.5929    14.456737  0.081237   14.466066 
2008            309       273       13.830833  14.4577    14.254935  0.166119   14.3148   
2009            309       273       14.049933  14.4995    14.300403  0.12226    14.3115   
2010            309       273       14.653867  14.906366  14.831686  0.05432    14.8419   
2011            309       273       15.686767  16.400333  16.10417   0.139831   16.105566 
2012            309       273       15.1945    15.725833  15.470767  0.116252   15.471033 
2013            309       273       14.2728    14.779667  14.539505  0.124421   14.529933 
2014            309       273       14.571967  15.083933  14.892587  0.124683   14.923034 
2015            309       273       15.200233  15.929033  15.688464  0.148088   15.703067 
2016            309       273       15.4361    15.866034  15.711208  0.110671   15.748199 
2017            309       273       14.231234  14.690233  14.535658  0.090833   14.557266 
2018            309       273       15.765866  16.3255    16.053773  0.11938    16.053234 
2019            309       273       14.3854    14.9637    14.768761  0.158783   14.8107   
2020            309       273       14.1613    14.6415    14.470369  0.104591   14.487033 
2021            309       273       16.115366  16.616066  16.427334  0.143341   16.480101 
2022            309       273       15.3894    15.826767  15.685944  0.12594    15.7317   
2023            309       273       15.989133  16.376667  16.245984  0.100415   16.2771