Year	% (cumulative)
1970	20.2354202270508
2000	55.8699989318848
2001	56.310001373291
2002	57.3699989318848
2003	59.7700004577637
2004	61.5699996948242
2005	60.5
2006	62.2200012207031
2007	64.0500030517578
2008	62.1599998474121
2009	63.7900009155273
2010	64.5999984741211
2011	65.870002746582
2012	66.6800003051758
2013	67.0800018310547
2014	68.75
2015	68.8199996948242
2016	69.9400024414062
2017	70.2699966430664
2018	71.9800033569336
2019	72.9700012207031
2020	72.8600006103516
2021	73.6900024414062
2022	73.5800018310547