Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            274       250       8.224786   8.334357   8.265995   0.027963   8.259196  
2008            274       250       7.187724   7.46031    7.311086   0.065312   7.308017  
2009            274       250       6.911678   7.166965   6.984518   0.059411   6.969018  
2010            274       250       9.410929   9.60175    9.499823   0.042802   9.499089  
2011            274       250       7.555      7.767607   7.652256   0.050251   7.6535    
2012            274       250       7.675897   7.916965   7.787524   0.056217   7.788155  
2013            274       250       8.168      8.276857   8.217705   0.022756   8.217161  
2014            274       250       7.646071   7.798214   7.695714   0.037528   7.683964  
2015            274       250       10.402322  10.65125   10.51695   0.065088   10.510607 
2016            274       250       9.802138   9.983896   9.868063   0.04399    9.858     
2017            274       250       7.928215   8.258393   8.045669   0.072864   8.029285  
2018            274       250       8.364964   8.629179   8.518023   0.065507   8.533286  
2019            274       250       7.863928   8.17625    7.975958   0.074384   7.9575    
2020            274       250       8.365414   8.657517   8.506938   0.064351   8.506638  
2021            274       250       7.717692   7.996923   7.818263   0.073314   7.811769  
2022            274       250       8.200286   8.339      8.271398   0.03859    8.269375  
2023            274       250       7.970036   8.187465   8.073017   0.052678   8.077143