Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            66        42        14.691636  14.872491  14.803128  0.052549   14.817666 
2008            66        42        14.209669  14.404683  14.334216  0.052901   14.35075  
2009            66        42        14.09481   14.26803   14.203513  0.048541   14.217333 
2010            66        42        14.113276  14.287576  14.221375  0.050891   14.233765 
2011            66        42        14.406802  14.567769  14.507131  0.047934   14.519485 
2012            66        42        15.554926  15.685549  15.634608  0.036493   15.644037 
2013            66        42        13.933822  14.084836  14.024372  0.043001   14.03492  
2014            66        42        13.755715  13.980564  13.884275  0.060391   13.896834 
2015            66        42        14.129904  14.308191  14.231828  0.047545   14.240563 
2016            66        42        15.067118  15.198743  15.151011  0.036847   15.161268 
2017            66        42        14.922787  14.98272   14.960346  0.017485   14.964602 
2018            66        42        14.450425  14.632512  14.562864  0.051276   14.577153 
2019            66        42        14.834024  14.999197  14.936125  0.047438   14.948064 
2020            66        42        15.270511  15.422462  15.366529  0.044259   15.374324 
2021            66        42        14.838165  14.937752  14.901199  0.029226   14.908195 
2022            66        42        14.41625   14.541962  14.482478  0.033084   14.48503  
2023            66        42        15.112581  15.230783  15.182557  0.032492   15.190361