Year	% (cumulative)
1970	11.5215101242065
1976	10
1980	11.8273296356201
2001	37.75
2002	39.2200012207031
2003	40.8400001525879
2004	42.1100006103516
2005	43.1300010681152
2006	45.25
2007	47.25
2008	49.2900009155273
2009	50.1199989318848
2010	50.6151885986328
2011	53.4900016784668
2012	54.5200004577637
2013	55.7599983215332
2014	56.25
2015	57.4900016784668
2016	60.0900001525879
2017	60.6399993896484
2018	61.810001373291
2019	62.9900016784668
2020	65.1999969482422
2021	66.2399978637695
2022	66.5100021362305