Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            553       489       25.547968  26.116806  25.924917  0.143618   25.948387 
2008            553       489       24.159128  24.792419  24.525759  0.142184   24.541161 
2009            553       489       26.126774  26.376484  26.277432  0.068328   26.301065 
2010            553       489       24.252775  24.798388  24.552915  0.106559   24.551033 
2011            553       489       24.078386  24.553289  24.407058  0.087802   24.419096 
2012            553       489       25.417484  25.876259  25.670012  0.087689   25.668354 
2013            553       489       25.426613  26.014225  25.793714  0.116931   25.802967 
2014            553       489       24.765322  25.244774  25.072371  0.129008   25.110645 
2015            553       489       24.184999  24.914614  24.598809  0.191247   24.656742 
2016            553       489       25.212517  25.516581  25.361906  0.06285    25.360838 
2017            553       489       25.441322  25.84787   25.696027  0.083418   25.714323 
2018            553       489       26.828354  27.197807  26.967531  0.075868   26.964613 
2019            553       489       26.50029   26.942677  26.776582  0.093498   26.797129 
2020            553       489       25.275969  25.588646  25.431465  0.09242    25.443419 
2021            553       489       25.781967  26.188354  26.011246  0.081132   26.010902 
2022            553       489       23.723259  24.60342   24.299363  0.195979   24.354065 
2023            553       489       24.106936  24.776194  24.470838  0.154505   24.487387