Year	scale 0 - 100
2004	50.98039215686274
2005	53.627450980392155
2006	54.21568627450981
2007	54.46601941747573
2008	53.20388349514563
2009	52.285714285714285
2010	53.523809523809526
2011	54.476190476190474
2012	54.57142857142857
2013	54.67289719626168
2014	57.757009345794394
2015	57.5
2016	56.2962962962963
2017	55.74074074074074
2018	55.833333333333336
2019	54.629629629629626
2020	54.907407407407405