Year	% (cumulative)
1970	6.35159015655518
1976	5.43953990936279
1980	5.84222984313965
2001	24.2900009155273
2002	25.75
2003	26.9500007629395
2004	27.9799995422363
2005	29.2600002288818
2006	30.8899993896484
2007	32.1500015258789
2008	34
2009	35.6199989318848
2010	34.098991394043
2011	37.5699996948242
2012	38.7799987792969
2013	39.6399993896484
2014	40.2799987792969
2015	41.5400009155273
2016	45.0499992370605
2017	45.439998626709
2018	46.9900016784668
2019	47.8499984741211
2020	50.6300010681152
2021	51.4300003051758
2022	51.75