Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            559       485       11.6696    13.4543    12.374795  0.421173   12.3086   
2008            559       485       11.9214    13.5271    12.515071  0.400027   12.424867 
2009            559       485       11.929767  12.8008    12.303769  0.18369    12.319366 
2010            559       485       13.155367  13.9707    13.436371  0.158376   13.411667 
2011            559       485       12.442276  13.345517  12.768237  0.191404   12.718656 
2012            559       485       13.8873    14.578033  14.26394   0.174192   14.308033 
2013            559       485       11.512134  12.064433  11.713974  0.126067   11.7063   
2014            559       485       10.8869    11.612866  11.253349  0.167132   11.266133 
2015            559       485       10.6585    12.154266  11.150284  0.367679   11.058634 
2016            559       485       12.479667  13.1046    12.770565  0.143246   12.764133 
2017            559       485       13.591833  14.333467  13.901416  0.168926   13.893    
2018            559       485       10.221833  11.052134  10.471857  0.1858     10.419167 
2019            559       485       13.1593    13.778334  13.436471  0.132472   13.423    
2020            559       485       12.559401  13.273167  12.860814  0.168686   12.844167 
2021            559       485       12.7461    13.6755    13.123473  0.219024   13.096    
2022            559       485       13.104167  13.557467  13.346607  0.099332   13.359533 
2023            559       485       13.118793  14.006448  13.481917  0.23313    13.457276