Year	scale 0 - 100
2004	75.15151545454546
2005	76.36363636363637
2006	76.96969727272727
2007	77.87878818181818
2008	79.09090818181818
2009	78.48484727272727
2010	78.03030363636363
2011	75.75757636363636
2012	75.45454636363637
2013	74.84848484848486
2014	72.42424242424244
2015	75.83337499999999
2016	72.22226666666666
2017	76.66668333333332
2018	76.38892499999999
2019	75.2778
2020	71.38889999999999