Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            710       666       9.552729   9.871211   9.719517   0.056409   9.709952  
2008            710       666       9.439961   9.755344   9.623146   0.065334   9.604087  
2009            710       666       9.378049   9.707167   9.540033   0.064681   9.523335  
2010            710       666       10.099066  10.492356  10.308222  0.079696   10.292974 
2011            710       666       10.062173  10.444742  10.266777  0.077302   10.263762 
2012            710       666       11.108492  11.52673   11.337315  0.087718   11.332825 
2013            710       666       10.244745  10.639625  10.464571  0.084631   10.458777 
2014            710       666       9.392088   9.888463   9.631981   0.113499   9.614113  
2015            710       666       9.494839   9.920044   9.711889   0.087165   9.702073  
2016            710       666       10.27014   10.67533   10.453075  0.089169   10.42343  
2017            710       666       9.751049   10.18571   9.945644   0.097269   9.918594  
2018            710       666       9.823156   10.36111   10.098143  0.123294   10.083668 
2019            710       666       9.544981   9.965569   9.771618   0.087181   9.762904  
2020            710       666       10.098647  10.460656  10.275833  0.068256   10.260089 
2021            710       666       10.782914  11.139518  10.925902  0.090164   10.89304  
2022            710       666       10.422462  10.848822  10.625228  0.095436   10.609775 
2023            710       666       10.763094  10.971198  10.845649  0.059744   10.826587