Year	scale 0 - 100
2004	46.36363636363637
2005	45.15151515151515
2006	46.36363636363637
2007	47.94117647058823
2008	49.411764705882355
2009	50.57142857142857
2010	52.285714285714285
2011	52.285714285714285
2012	53.142857142857146
2013	52.77777777777778
2014	51.388888888888886
2015	51.111111111111114
2016	54.44444444444444
2017	53.611111111111114
2018	46.94444444444444
2019	51.94444444444444
2020	47.22222222222222