Year	scale 0 - 100
2004	87.500000625
2005	88.95833375
2006	89.1666675
2007	88.541666875
2008	87.70833250000001
2009	88.3333325
2010	88.54166687499999
2011	88.33333312499998
2012	88.12499999999999
2013	86.04166666666667
2014	85.20833333333334
2015	86.8750375
2016	88.5416875
2017	89.3750125
2018	90.8333375
2019	90.20835
2020	87.5000125