Year	% (cumulative)
1970	14
2000	43.0400009155273
2001	43.9799995422363
2002	46.189998626709
2003	48
2004	49.7900009155273
2005	49.2099990844727
2006	50.7900009155273
2007	53.2000007629395
2008	52.0699996948242
2009	53.3600006103516
2010	54.6399993896484
2011	56.0699996948242
2012	56.7799987792969
2013	57.4700012207031
2014	58.9300003051758
2015	60.5800018310547
2016	60.3899993896484
2017	61.439998626709
2018	62.7000007629395
2019	64.879997253418
2020	64.75
2021	65.9599990844727
2022	65.9899978637695