Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            275       142       16.152935  17.145807  16.611808  0.233105   16.615387 
2008            275       142       13.047871  14.544517  13.816205  0.372412   13.839516 
2009            275       142       13.715064  15.361322  14.524962  0.407709   14.540016 
2010            275       142       11.598194  13.064516  12.283614  0.354662   12.289581 
2011            275       142       14.246323  15.714129  14.987007  0.36657    15.00629  
2012            275       142       13.523387  15.520935  14.449301  0.481019   14.45421  
2013            275       142       13.922483  15.871419  14.853217  0.470708   14.863113 
2014            275       142       12.725097  14.366096  13.599416  0.415289   13.660451 
2015            275       142       15.615323  16.901161  16.361657  0.349618   16.416098 
2016            275       142       12.79129   14.848064  14.099148  0.551768   14.218032 
2017            275       142       12.039935  13.705613  13.044413  0.455025   13.144081 
2018            275       142       11.778646  13.311291  12.602788  0.38124    12.669887 
2019            275       142       13.179129  14.536516  13.899762  0.332788   13.94142  
2020            275       142       12.125129  13.879935  13.235951  0.474866   13.340048 
2021            275       142       13.356516  15.136323  14.535517  0.471008   14.667839 
2022            275       142       12.112871  14.02971   13.290853  0.516393   13.380484 
2023            275       142       11.770233  13.4357    12.850739  0.439009   12.97055