Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            207       197       19.252323  19.87458   19.580304  0.144577   19.591032 
2008            207       197       20.391581  20.900904  20.687692  0.116187   20.697935 
2009            207       197       19.325581  19.861322  19.640055  0.117966   19.637678 
2010            207       197       19.026451  19.542645  19.320669  0.125678   19.335743 
2011            207       197       17.771999  19.090033  18.47204   0.324368   18.489388 
2012            207       197       19.627903  20.436129  20.083603  0.190436   20.094872 
2013            207       197       17.094452  18.790806  17.9898    0.408319   18.002096 
2014            207       197       18.396322  18.993645  18.727249  0.132963   18.726871 
2015            207       197       19.323677  19.94087   19.658684  0.139778   19.667032 
2016            207       197       20.054291  20.512386  20.318361  0.101494   20.318064 
2017            207       197       18.557549  19.521549  19.088743  0.232818   19.119129 
2018            207       197       16.981129  17.898548  17.472925  0.216648   17.480709 
2019            207       197       17.110645  18.018032  17.5678    0.226383   17.580452 
2020            207       197       18.232677  19.005516  18.64952   0.187217   18.667387 
2021            207       197       21.016291  21.248741  21.182647  0.047448   21.193743 
2022            207       197       17.518322  18.207645  17.907478  0.151251   17.904324 
2023            207       197       18.648767  19.362101  19.045357  0.164914   19.049168