Year	scale 0 - 100
2004	51.666666666666664
2005	50.476190476190474
2006	50.714285714285715
2007	51.19047619047619
2008	52.38095238095238
2009	53.72093023255814
2010	55.348837209302324
2011	55.58139534883721
2012	55.348837209302324
2013	54.54545454545455
2014	53.18181818181818
2015	53.18181818181818
2016	55.90909090909091
2017	54.54545454545455
2018	51.59090909090909
2019	55.68181818181818
2020	50.68181818181818