Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            295       221       28.868387  29.00729   28.96032   0.02779    28.968645 
2008            295       221       30.046549  30.340807  30.204098  0.083065   30.21571  
2009            295       221       29.512711  29.629354  29.562514  0.03687    29.549644 
2010            295       221       29.985355  30.133839  30.068564  0.04689    30.075096 
2011            295       221       30.423645  30.593388  30.503289  0.049422   30.499096 
2012            295       221       29.787033  29.849871  29.817437  0.014442   29.820549 
2013            295       221       29.328386  29.512064  29.397992  0.044169   29.388645 
2014            295       221       29.870935  29.968388  29.904316  0.022477   29.898001 
2015            295       221       30.283096  30.394711  30.348404  0.023345   30.347322 
2016            295       221       30.566484  30.739     30.633391  0.039131   30.625    
2017            295       221       30.099773  30.138775  30.121835  0.011145   30.122904 
2018            295       221       30.047743  30.17671   30.123229  0.032086   30.129709 
2019            295       221       29.401419  29.468     29.447761  0.011263   29.448225 
2020            295       221       29.81942   30.196741  30.033641  0.067762   30.022581 
2021            295       221       29.614323  29.855871  29.740957  0.062363   29.753807 
2022            295       221       30.700291  30.842291  30.76865   0.03902    30.759193 
2023            295       221       31.282871  31.468098  31.379295  0.048722   31.373194