Year	% (cumulative)
1970	3.70000004768372
2000	22.3199996948242
2001	23.6000003814697
2002	25.2000007629395
2003	27.4200000762939
2004	29.2900009155273
2005	28.3899993896484
2006	30.8400001525879
2007	31.4400005340576
2008	31.7099990844727
2009	34.6599998474121
2010	34.6100006103516
2011	35.2200012207031
2012	37.6500015258789
2013	37.5
2014	39.1599998474121
2015	40.6100006103516
2016	41.2299995422363
2017	41.8499984741211
2018	42.9500007629395
2019	45.4900016784668
2020	45.689998626709
2021	47.2099990844727
2022	47.7599983215332