Year	% (cumulative)
1970	8.96811962127686
1974	12.5255699157715
1979	16.6905002593994
1986	16.7723693847656
1987	17.2957706451416
1988	17.7041091918945
1989	18.082649230957
1990	19.0544300079346
1991	19.4046802520752
1992	20.7532291412354
1993	21.3555603027344
1994	21.9589195251465
1995	22.8809509277344
2004	29.433500289917
2005	30.0688591003418
2006	30.6197299957275
2007	31.2143802642822
2008	30.1437492370605
2009	30.7162094116211
2010	31.2998504638672
2011	31.8846397399902
2012	32.3745613098145
2013	32.8660697937012
2014	33.3572387695312
2015	33.8188018798828
2016	34.3210792541504
2017	34.7968788146973
2018	42.5185623168945
2019	35.9010696411133
2020	43.9519577026367
2021	44.1910743713379
2022	45.7203712463379