Year	scale 0 - 100
2004	76.89393931818182
2005	79.84848454545455
2006	79.16666636363637
2007	79.54545409090909
2008	79.31818159090909
2009	79.69697000000001
2010	82.04545522727273
2011	82.4242425
2012	81.74242431818182
2013	79.38405797101449
2014	78.731884057971
2015	81.63124893617024
2016	81.20572127659578
2017	82.69506595744684
2018	83.04968085106385
2019	82.2695340425532
2020	80.49647659574468