Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            207       197       27.706266  27.901199  27.854028  0.046055   27.876867 
2008            207       197       27.9827    28.189867  28.078352  0.035343   28.0784   
2009            207       197       27.8633    28.139601  28.052222  0.057868   28.0718   
2010            207       197       28.5777    28.914433  28.80366   0.069421   28.824766 
2011            207       197       27.719299  27.935101  27.859872  0.046965   27.867434 
2012            207       197       28.642967  28.832767  28.769781  0.044285   28.777367 
2013            207       197       27.552334  27.806267  27.650796  0.05269    27.651634 
2014            207       197       27.245399  27.659866  27.474121  0.093435   27.479601 
2015            207       197       28.8946    29.309999  29.163062  0.094827   29.18     
2016            207       197       27.989901  28.2456    28.139921  0.065024   28.152866 
2017            207       197       28.7418    28.959034  28.901943  0.038774   28.903133 
2018            207       197       27.3172    27.527733  27.463793  0.046444   27.4799   
2019            207       197       29.168034  29.344133  29.280102  0.036545   29.289034 
2020            207       197       28.898733  29.210434  29.073185  0.064325   29.075533 
2021            207       197       29.073267  29.611534  29.426048  0.112396   29.447399 
2022            207       197       28.111032  28.217934  28.151413  0.020369   28.149733 
2023            207       197       29.694866  30.286934  30.045977  0.129823   30.039833