Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            275       142       29.604872  29.800838  29.751046  0.053773   29.772871 
2008            275       142       28.052322  28.176451  28.117259  0.027702   28.122161 
2009            275       142       28.774807  28.912355  28.848931  0.039301   28.844581 
2010            275       142       30.08942   30.229033  30.185861  0.035165   30.199807 
2011            275       142       29.508322  29.622452  29.603785  0.021145   29.610162 
2012            275       142       28.512774  28.772774  28.724351  0.052352   28.740838 
2013            275       142       28.529259  28.745291  28.669847  0.058688   28.684871 
2014            275       142       29.180967  29.339064  29.292643  0.045486   29.313678 
2015            275       142       29.051903  29.29529   29.239359  0.052816   29.255145 
2016            275       142       30.23284   30.505064  30.436527  0.059219   30.458436 
2017            275       142       28.857935  29.195904  29.137694  0.071717   29.166919 
2018            275       142       28.862419  29.176065  29.096296  0.066583   29.110823 
2019            275       142       29.53484   29.834064  29.780643  0.059644   29.799935 
2020            275       142       29.517902  29.742613  29.707009  0.044833   29.721999 
2021            275       142       29.161322  29.301323  29.268607  0.027365   29.274936 
2022            275       142       29.033031  29.363548  29.304457  0.06494    29.322661 
2023            275       142       29.996225  30.157     30.116494  0.034275   30.124388