Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1073      658       7.247032   8.000936   7.551386   0.185853   7.50671   
2008            1073      658       6.863032   8.142      7.338224   0.303577   7.260355  
2009            1073      658       8.137613   9.167193   8.495057   0.234457   8.439887  
2010            1073      658       6.327549   7.696968   6.802502   0.331964   6.709306  
2011            1073      658       9.14229    10.371613  9.556351   0.303954   9.479758  
2012            1073      658       8.235129   9.220936   8.594764   0.225783   8.530145  
2013            1073      658       7.285      8.343323   7.637802   0.228971   7.572113  
2014            1073      658       7.011968   8.177484   7.436355   0.248367   7.379597  
2015            1073      658       10.566194  11.378194  10.905021  0.159132   10.881936 
2016            1073      658       8.770806   9.929097   9.184269   0.267433   9.1095    
2017            1073      658       8.712291   9.82429    9.198632   0.249857   9.165194  
2018            1073      658       6.638      7.763742   7.012827   0.27206    6.911726  
2019            1073      658       7.301419   8.53171    7.731861   0.241536   7.691355  
2020            1073      658       8.215451   9.578032   8.67394    0.352168   8.560323  
2021            1073      658       8.774903   10.374193  9.295698   0.385935   9.178081  
2022            1073      658       6.841097   8.49171    7.416041   0.429645   7.278742  
2023            1073      658       7.358      8.746634   7.870654   0.36939    7.757833