Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            560       525       29.240734  29.696899  29.417176  0.115884   29.393566 
2008            560       525       27.899467  28.090967  27.985677  0.044012   27.9876   
2009            560       525       28.816267  29.191566  28.948091  0.096331   28.935534 
2010            560       525       29.1812    29.434834  29.273169  0.065481   29.255434 
2011            560       525       29.035967  29.518101  29.236272  0.106006   29.237833 
2012            560       525       28.460501  28.7493    28.601574  0.073681   28.596134 
2013            560       525       29.283167  29.436001  29.355826  0.030906   29.361633 
2014            560       525       28.7663    29.146267  28.919358  0.076334   28.916666 
2015            560       525       28.779734  29.084467  28.898565  0.052111   28.8906   
2016            560       525       30.013834  30.2827    30.134769  0.065802   30.144934 
2017            560       525       28.125334  28.333967  28.213716  0.041764   28.209867 
2018            560       525       29.048201  29.231733  29.104602  0.037455   29.094667 
2019            560       525       29.753666  30.002266  29.849942  0.035986   29.852734 
2020            560       525       28.264067  28.742701  28.500649  0.118307   28.524366 
2021            560       525       29.096201  29.297266  29.174335  0.039904   29.1766   
2022            560       525       29.6038    29.858     29.787132  0.068471   29.816101 
2023            560       525       30.215099  30.535999  30.37582   0.065801   30.3787