Year	% (cumulative)
1970	10.268030166626
1976	9.19999980926514
1980	11.3122901916504
2001	38.2700004577637
2002	39.8199996948242
2003	41.560001373291
2004	42.8699989318848
2005	43.9500007629395
2006	46.2099990844727
2007	48.0699996948242
2008	50.2200012207031
2009	51.0200004577637
2010	52.0154418945312
2011	54.5200004577637
2012	55.689998626709
2013	57.1199989318848
2014	57.6599998474121
2015	58.8600006103516
2016	61.3899993896484
2017	62
2018	63.2000007629395
2019	64.4599990844727
2020	66.6600036621094
2021	67.4000015258789
2022	67.870002746582