Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            110       100       20.775225  21.561243  21.274806  0.210196   21.333724 
2008            110       100       19.616369  20.544746  20.179123  0.248559   20.237707 
2009            110       100       18.965765  20.068823  19.645135  0.291265   19.71182  
2010            110       100       18.751614  19.75374   19.359185  0.264905   19.417997 
2011            110       100       18.829153  19.987749  19.535205  0.311082   19.606701 
2012            110       100       19.975765  20.997087  20.609004  0.269506   20.674991 
2013            110       100       18.716806  19.724918  19.355234  0.259605   19.430683 
2014            110       100       18.536169  19.548391  19.173261  0.25687    19.251543 
2015            110       100       19.37039   20.30986   19.978012  0.231149   20.05281  
2016            110       100       19.83161   20.688555  20.373336  0.220213   20.433693 
2017            110       100       19.839394  20.653502  20.361269  0.210671   20.421849 
2018            110       100       19.58761   20.638065  20.247672  0.276413   20.321634 
2019            110       100       19.845406  20.591772  20.294015  0.191795   20.332637 
2020            110       100       19.946371  20.720062  20.452074  0.193859   20.514168 
2021            110       100       19.534777  20.203876  19.942213  0.173779   19.97987  
2022            110       100       19.577307  20.476587  20.157512  0.226332   20.225324 
2023            110       100       19.710421  20.463539  20.169298  0.192537   20.208835