Year	% (cumulative)
1970	5.0261697769165
1976	3.20000004768372
1980	4.13836002349854
2001	26.1200008392334
2002	27.6900005340576
2003	29.1100006103516
2004	30.4099998474121
2005	31.5
2006	33.5800018310547
2007	34.939998626709
2008	36.6699981689453
2009	38.2700004577637
2010	37.5922889709473
2011	40.9300003051758
2012	42.25
2013	43.7299995422363
2014	44.5099983215332
2015	45.6800003051758
2016	48.75
2017	49.4500007629395
2018	51.2299995422363
2019	52.4099998474121
2020	54.9500007629395
2021	55.4700012207031
2022	56.0699996948242