Year	scale 0 - 100
2004	64.61538461538461
2005	64.61538461538461
2006	64.35897435897436
2007	64.5
2008	64
2009	64.14634146341463
2010	63.41463414634146
2011	63.65853658536585
2012	62.19512195121951
2013	61.951219512195124
2014	63.170731707317074
2015	64.76190476190476
2016	65.95238095238095
2017	64.28571428571429
2018	61.42857142857143
2019	62.61904761904762
2020	59.04761904761905