Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            42        34        14.376678  14.542968  14.421398  0.046955   14.401306 
2008            42        34        13.328194  13.41713   13.365125  0.028142   13.361661 
2009            42        34        14.372258  14.418516  14.385134  0.015536   14.377177 
2010            42        34        15.064871  15.148839  15.099104  0.024936   15.093903 
2011            42        34        14.351419  14.408742  14.375416  0.017106   14.373226 
2012            42        34        14.444161  14.597871  14.494795  0.051583   14.470694 
2013            42        34        13.843194  13.926871  13.866089  0.027463   13.853597 
2014            42        34        15.320291  15.40842   15.34404   0.025024   15.332823 
2015            42        34        16.253452  16.396904  16.291605  0.048957   16.264048 
2016            42        34        15.693871  15.867226  15.747341  0.05988    15.717678 
2017            42        34        14.735032  14.821774  14.7588    0.029692   14.741984 
2018            42        34        15.642775  15.744936  15.672109  0.035168   15.652952 
2019            42        34        15.238065  15.372129  15.27498   0.045965   15.250774 
2020            42        34        15.235613  15.415838  15.284739  0.058438   15.252758 
2021            42        34        14.424516  14.57758   14.468844  0.053282   14.440193 
2022            42        34        14.909451  15.070807  14.950711  0.055588   14.919097 
2023            42        34        14.309452  14.377322  14.332544  0.017987   14.330984