Year	scale 0 - 100
2004	51.08108108108108
2005	49.729729729729726
2006	49.729729729729726
2007	49.73684210526316
2008	50.526315789473685
2009	53.421052631578945
2010	55.526315789473685
2011	55
2012	55.526315789473685
2013	56.15384615384615
2014	55.8974358974359
2015	54.5
2016	54.75
2017	55.25
2018	50.75
2019	55
2020	50.75