Year	% (cumulative)
1976	8.89513969421387
1992	23.2240505218506
2000	26.0400009155273
2001	25.1900005340576
2002	22.5599994659424
2004	21.9599990844727
2005	26.9400005340576
2006	30.4799995422363
2007	31.6800003051758
2008	32.3199996948242
2009	33.9199981689453
2011	37.060001373291
2012	38.25
2013	42.2599983215332
2014	37.9599990844727
2015	38.4900016784668
2016	39.3600006103516
2017	41.7099990844727
2018	41.5099983215332
2019	44.6300010681152
2020	47.8400001525879
2021	45.8699989318848
2022	47.7640228271484