Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1213      941       11.934016  12.674986  12.464275  0.229588   12.601269 
2008            1213      941       12.068571  12.678653  12.507708  0.194568   12.615295 
2009            1213      941       12.16094   13.009898  12.677802  0.259713   12.724515 
2010            1213      941       12.449455  13.073874  12.86058   0.194619   12.908465 
2011            1213      941       12.214214  12.894577  12.62802   0.192033   12.679733 
2012            1213      941       12.072877  12.972331  12.652913  0.278477   12.726136 
2013            1213      941       11.793907  12.786814  12.438434  0.305711   12.562227 
2014            1213      941       13.79431   14.529674  14.268318  0.223293   14.356572 
2015            1213      941       13.69752   14.530392  14.239338  0.257162   14.356052 
2016            1213      941       12.838183  13.628711  13.352607  0.244465   13.44306  
2017            1213      941       12.584605  13.458477  13.124297  0.277188   13.201918 
2018            1213      941       12.711282  13.54322   13.247739  0.261552   13.315715 
2019            1213      941       12.969509  13.721734  13.459121  0.233609   13.544641 
2020            1213      941       14.358435  17.790703  15.44118   0.356487   15.469145 
2021            1213      941       13.92446   16.683645  14.913005  0.321525   14.940077 
2022            1213      941       12.525311  13.442538  13.118583  0.279576   13.186983 
2023            1213      941       14.094289  16.658928  15.061429  0.32616    15.074326