Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            435       393       10.1844    10.4616    10.380227  0.063773   10.3927   
2008            435       393       8.675533   8.786767   8.725889   0.030052   8.718     
2009            435       393       9.111767   9.5139     9.332461   0.099745   9.325566  
2010            435       393       10.1218    10.246     10.188633  0.038667   10.199    
2011            435       393       9.292311   9.432448   9.37337    0.038981   9.374552  
2012            435       393       9.964767   10.250234  10.131863  0.07529    10.134933 
2013            435       393       10.191533  10.4609    10.337486  0.068956   10.3326   
2014            435       393       10.7074    10.992233  10.892594  0.061867   10.894234 
2015            435       393       11.42      11.7841    11.594151  0.101684   11.5739   
2016            435       393       12.144     12.379567  12.283766  0.055496   12.282467 
2017            435       393       10.2485    10.3705    10.302056  0.032715   10.296333 
2018            435       393       9.909966   10.141133  10.081191  0.058067   10.103633 
2019            435       393       10.623767  10.842167  10.745049  0.052213   10.741933 
2020            435       393       10.294833  10.843467  10.659911  0.118814   10.677333 
2021            435       393       10.093066  10.6545    10.433058  0.132089   10.451567 
2022            435       393       9.5329     9.658334   9.608038   0.028953   9.604867  
2023            435       393       9.285034   9.373793   9.337151   0.018466   9.338897