Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            5431      5188      25.997709  27.390419  27.024478  0.240162   27.10937  
2008            5431      5188      26.223227  27.743999  27.416187  0.250297   27.476628 
2009            5431      5188      25.126549  27.181162  26.62519   0.423553   26.754936 
2010            5431      5188      26.381935  27.900097  27.50786   0.289161   27.595678 
2011            5431      5188      26.304678  27.896097  27.618298  0.300071   27.729032 
2012            5431      5188      27.281225  28.406775  28.160928  0.192849   28.232677 
2013            5431      5188      27.108355  28.303549  28.09093   0.20458    28.172291 
2014            5431      5188      26.353838  27.97171   27.617356  0.310761   27.710742 
2015            5431      5188      26.724646  28.359806  27.9566    0.318128   28.06121  
2016            5431      5188      27.537128  29.308805  28.990478  0.334153   29.113402 
2017            5431      5188      26.765936  28.514839  28.119873  0.372683   28.253871 
2018            5431      5188      26.146936  27.965872  27.427432  0.346198   27.476387 
2019            5431      5188      27.091452  28.921291  28.523626  0.327732   28.622065 
2020            5431      5188      26.993807  29.295547  28.739505  0.521938   28.933871 
2021            5431      5188      26.346064  28.390032  27.948102  0.378495   28.032452 
2022            5431      5188      26.005903  27.67      27.255538  0.327573   27.34221  
2023            5431      5188      27.019871  29.251549  28.662417  0.530271   28.815354