Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1808      1738      28.263901  28.755033  28.424102  0.11822    28.390817 
2008            1808      1738      29.2876    29.849733  29.517907  0.134689   29.53375  
2009            1808      1738      29.013567  29.549667  29.249517  0.124166   29.234917 
2010            1808      1738      30.019266  30.387699  30.198689  0.095625   30.210299 
2011            1808      1738      29.4813    30.145866  29.722897  0.170777   29.67165  
2012            1808      1738      28.453133  28.680534  28.556015  0.048513   28.547866 
2013            1808      1738      29.422934  29.882299  29.570465  0.123881   29.53125  
2014            1808      1738      28.494101  28.7223    28.603111  0.050241   28.599817 
2015            1808      1738      28.939234  29.500999  29.172181  0.114316   29.166583 
2016            1808      1738      29.137333  29.707933  29.425771  0.139651   29.412717 
2017            1808      1738      27.283266  27.500767  27.359736  0.040783   27.354534 
2018            1808      1738      29.996933  30.3554    30.166461  0.081775   30.152217 
2019            1808      1738      28.565567  29.229599  28.965808  0.199467   29.003117 
2020            1808      1738      28.109734  28.567034  28.319815  0.103913   28.320533 
2021            1808      1738      28.046734  28.3911    28.247077  0.063632   28.245983 
2022            1808      1738      30.4126    30.956499  30.645481  0.102393   30.6391   
2023            1808      1738      29.090334  29.9007    29.558062  0.187613   29.531567