Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            943       831       21.662533  22.029234  21.92799   0.067522   21.932034 
2008            943       831       22.397266  22.806868  22.651351  0.108315   22.672867 
2009            943       831       22.474934  22.711433  22.627555  0.049882   22.636734 
2010            943       831       21.343466  21.6789    21.57822   0.072347   21.601334 
2011            943       831       24.95993   25.296     25.099852  0.064432   25.108517 
2012            943       831       24.085632  24.322001  24.198206  0.052229   24.1959   
2013            943       831       22.241167  22.7894    22.53883   0.09835    22.5588   
2014            943       831       22.340967  22.886433  22.683251  0.122752   22.685833 
2015            943       831       25.323601  25.682568  25.554107  0.078442   25.561567 
2016            943       831       23.531834  23.882166  23.732618  0.07754    23.726267 
2017            943       831       23.427567  23.915934  23.733755  0.116095   23.760534 
2018            943       831       23.371866  23.748734  23.619596  0.088926   23.615801 
2019            943       831       23.631567  24.187334  23.956118  0.120636   23.9559   
2020            943       831       25.323967  26.027401  25.627541  0.15088    25.6028   
2021            943       831       23.478201  24.3965    23.952597  0.16209    23.931601 
2022            943       831       23.703333  24.159067  23.956204  0.113855   23.954268 
2023            943       831       25.057587  25.524931  25.286805  0.103172   25.285999