Year	scale 0 - 100
2004	49.23076923076923
2005	52.30769230769231
2006	52.82051282051282
2007	52
2008	51.25
2009	50.24390243902439
2010	52.68292682926829
2011	53.41463414634146
2012	51.707317073170735
2013	52.926829268292686
2014	56.58536585365854
2015	55
2016	52.857142857142854
2017	51.904761904761905
2018	53.333333333333336
2019	51.42857142857143
2020	51.19047619047619