Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            134       88        12.136167  12.394     12.262086  0.07028    12.276817 
2008            134       88        12.007667  12.444     12.232207  0.107202   12.250833 
2009            134       88        12.026767  12.353534  12.175014  0.069382   12.178667 
2010            134       88        12.747033  12.956933  12.865051  0.049552   12.86615  
2011            134       88        12.830167  13.1614    12.999034  0.063238   12.996433 
2012            134       88        13.508966  13.840167  13.682873  0.083526   13.684417 
2013            134       88        12.425933  12.7179    12.59318   0.075679   12.594567 
2014            134       88        12.427234  12.697866  12.55049   0.052656   12.557283 
2015            134       88        12.3909    12.786767  12.613453  0.105244   12.615083 
2016            134       88        13.104533  13.4698    13.324284  0.092111   13.33625  
2017            134       88        12.6242    12.842433  12.769112  0.040782   12.777833 
2018            134       88        12.9682    13.2748    13.137188  0.078367   13.149667 
2019            134       88        12.272233  12.5282    12.396808  0.053724   12.394634 
2020            134       88        12.371966  12.665333  12.530004  0.059691   12.536283 
2021            134       88        13.594334  13.959933  13.805486  0.080222   13.8012   
2022            134       88        13.501333  13.675266  13.610281  0.034084   13.610217 
2023            134       88        13.265     13.4513    13.39078   0.033161   13.396117