Year	scale 0 - 100
2004	68.97435897435898
2005	71.28205128205128
2006	70.76923076923077
2007	71.7948717948718
2008	73.84615384615384
2009	72.25
2010	71.25
2011	72.5
2012	70.75
2013	70.73170731707317
2014	70
2015	72.1951219512195
2016	72.6829268292683
2017	71.70731707317073
2018	62.926829268292686
2019	63.65853658536585
2020	61.707317073170735