Year	scale 0 - 100
2004	75.15151545454546
2005	76.36363636363637
2006	76.96969727272727
2007	77.87878818181818
2008	79.09090818181818
2009	76.94444333333333
2010	76.25000083333332
2011	74.7222225
2012	74.444445
2013	74.44444444444444
2014	71.94444444444447
2015	76.15388461538461
2016	72.82055384615384
2017	76.9230923076923
2018	76.66669999999999
2019	75.64104615384616
2020	71.53847692307691