Year	% (cumulative)
1970	7.40000009536743
1975	9.10000038146973
1980	11.9362602233887
1990	18.3741798400879
2004	29.6287307739258
2005	30.4954605102539
2006	31.1538200378418
2007	31.8245391845703
2008	32.840518951416
2009	33.4039497375488
2010	34.2061805725098
2011	35.2059593200684
2012	40.3267021179199
2013	41.0507431030273
2014	37.5375518798828
2015	38.0225410461426
2016	38.7757606506348
2017	39.5990715026855
2018	42.9195327758789
2019	40.8385581970215
2020	43.802059173584
2021	41.9252891540527
2022	43.4981880187988