Year	% (cumulative)
1970	23.760669708252
1975	28.2212104797363
1980	34.1341285705566
1990	46.1306495666504
2000	50.4617004394531
2004	63.5869903564453
2008	64.8677291870117
2010	66.763542175293
2013	70.0585021972656
2017	59.4109382629395
2019	71.2324905395508
2020	63.5261306762695
2021	61.9727058410645
2022	61.854679107666