Year	% (cumulative)
1971	1.37460994720459
1976	2
1981	5.01067018508911
1986	5.80000019073486
1991	8.31208038330078
1996	12.1640901565552
2006	19.7333106994629
2008	20.3006992340088
2009	20.2764091491699
2010	20.5526103973389
2011	21.8460006713867
2014	24.1494808197021
2015	24.8195705413818
2017	26.1593799591064
2019	28.2241306304932
2022	29.8267993927002