Year	scale 0 - 100
2004	82.77777822222224
2005	84.77755544444445
2006	85.11100033333332
2007	84.77755499999999
2008	85.110889
2009	84.88866711111112
2010	84.66644477777778
2011	85.333333
2012	84.88888822222223
2013	83.8888888888889
2014	83.0111111111111
2015	81.55557666666667
2016	83.85418437500002
2017	87.01149655172415
2018	85.74714482758621
2019	84.82759999999999
2020	85.05749310344828