Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            277       214       28.4426    28.599234  28.56146   0.031016   28.567    
2008            277       214       29.094967  29.379734  29.153249  0.049763   29.138983 
2009            277       214       29.074533  29.212101  29.155512  0.033724   29.154984 
2010            277       214       30.1777    30.251699  30.212782  0.022213   30.21475  
2011            277       214       29.6035    29.758499  29.677345  0.047727   29.6641   
2012            277       214       29.5002    29.642933  29.571177  0.047016   29.571667 
2013            277       214       29.499268  29.7092    29.641897  0.041871   29.6418   
2014            277       214       28.5072    28.755234  28.656862  0.064504   28.667083 
2015            277       214       29.174866  29.317867  29.238975  0.039387   29.2376   
2016            277       214       28.822533  29.042233  28.926351  0.04746    28.925384 
2017            277       214       27.985399  28.072666  28.030347  0.023654   28.028183 
2018            277       214       29.613466  29.8388    29.764454  0.050228   29.771667 
2019            277       214       28.938566  29.082701  28.978584  0.032385   28.970766 
2020            277       214       28.559633  28.769001  28.606095  0.032387   28.600234 
2021            277       214       28.3181    28.863701  28.523744  0.113601   28.519033 
2022            277       214       30.035133  30.1409    30.084344  0.030268   30.08325  
2023            277       214       29.413733  29.9706    29.816336  0.121609   29.832617