Year	% (cumulative)
1972	12.4196500778198
1982	19.400239944458
1992	27.326150894165
2001	28.9899997711182
2002	27.6900005340576
2003	31.9400005340576
2004	30.8999996185303
2005	35.8499984741211
2006	34.3400001525879
2007	36.7400016784668
2008	39.1599998474121
2009	39.7700004577637
2010	39.4799995422363
2011	43.6399993896484
2012	42.7000007629395
2013	46.6300010681152
2014	47.6100006103516
2015	49.0400009155273
2016	47.7599983215332
2017	48.8499984741211
2018	50.0900001525879
2019	52.5800018310547
2020	53.1699981689453
2021	53.8400001525879
2022	57.2099990844727