Year	% (cumulative)
1971	7.910560131073
1992	16.3405990600586
2000	31.4099998474121
2001	32.4599990844727
2002	33.810001373291
2003	35.3400001525879
2004	34.8300018310547
2005	35.4000015258789
2006	36.939998626709
2007	37.4700012207031
2008	36.6034507751465
2009	37.3800010681152
2010	37.8199996948242
2011	38.5569686889648
2012	39.8199996948242
2013	41.0400009155273
2014	42.1100006103516
2015	42.6100006103516
2016	43.25
2017	42.7900009155273
2018	45.310001373291
2019	46.5400009155273
2020	46.5699996948242
2021	47.2200012207031
2022	48.7900009155273