Year	% (cumulative)
1976	17.1251106262207
1992	36.9952392578125
2000	36.9900016784668
2001	35.25
2002	33.7299995422363
2004	32.6800003051758
2005	38.1100006103516
2006	41.4300003051758
2007	43.0699996948242
2008	43.7299995422363
2009	45.4900016784668
2011	48.2799987792969
2012	50.1599998474121
2013	53.3400001525879
2014	49.5900001525879
2015	50.810001373291
2016	51.7999992370605
2017	52.9199981689453
2018	53.4799995422363
2019	57.310001373291
2020	58.0800018310547
2021	58.4099998474121
2022	56.266300201416