Year	% (cumulative)
1975	5.48691987991333
1992	15.0390901565552
2001	18.0455703735352
2006	19.5046501159668
2007	19.8160705566406
2008	20.1886596679688
2009	20.5309906005859
2010	20.7176494598389
2011	20.8099594116211
2012	21.5111198425293
2013	22.9197101593018
2014	24.063060760498
2015	24.4709796905518
2016	24.6281509399414
2017	24.7128791809082
2018	25.113618850708
2019	25.1552085876465
2020	26.0534706115723
2021	26.2697563171387
2022	26.3977317810059