Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            598       598       10.928678  11.868548  11.346783  0.193663   11.342597 
2008            598       598       10.392903  10.982323  10.752235  0.109311   10.762936 
2009            598       598       10.694226  11.594065  11.086731  0.220811   11.0855   
2010            598       598       11.617452  12.226032  11.882974  0.151613   11.880548 
2011            598       598       10.890871  12.033161  11.270803  0.291704   11.174871 
2012            598       598       13.042903  13.69229   13.341233  0.1354     13.315242 
2013            598       598       11.138     11.743387  11.366819  0.123342   11.31671  
2014            598       598       10.445774  11.170259  10.779454  0.140987   10.761951 
2015            598       598       10.543677  11.394322  10.85514   0.202013   10.809693 
2016            598       598       10.782484  11.472484  11.095614  0.158488   11.060516 
2017            598       598       10.91129   11.649484  11.268714  0.176088   11.280307 
2018            598       598       11.074645  11.705581  11.376183  0.140389   11.381274 
2019            598       598       11.113452  12.03671   11.577872  0.229744   11.60358  
2020            598       598       10.003613  10.794129  10.504817  0.171121   10.547548 
2021            598       598       11.169097  12.302903  11.604412  0.30481    11.573339 
2022            598       598       11.394322  11.890806  11.767662  0.110211   11.803855 
2023            598       598       12.096484  12.923064  12.525376  0.189067   12.575516