Year	scale 0 - 100
2004	78.25396841269841
2005	82.22190444444443
2006	83.33317428571428
2007	83.3330161904762
2008	84.28539666666667
2009	85.3965073015873
2010	85.55523873015873
2011	87.14285809523811
2012	86.19047555555557
2013	80.6060606060606
2014	80.0151515151515
2015	77.87881363636363
2016	79.24244545454545
2017	83.03032272727272
2018	83.18184090909091
2019	80.60607272727272
2020	81.51516363636364