Year	scale 0 - 100
2004	61.568627450980394
2005	62.05882352941177
2006	62.05882352941177
2007	62.71844660194175
2008	63.689320388349515
2009	64
2010	63.904761904761905
2011	64.47619047619048
2012	63.80952380952381
2013	63.64485981308411
2014	63.271028037383175
2015	63.98148148148148
2016	65
2017	63.888888888888886
2018	58.148148148148145
2019	59.81481481481482
2020	56.666666666666664