Year	% (cumulative)
1971	3.08014011383057
1980	6.63914012908936
1990	13.8349800109863
2006	36.5008010864258
2007	34.9422988891602
2008	36.2062797546387
2009	37.4224014282227
2011	39.8538284301758
2012	40.7450218200684
2013	42.1697807312012
2014	42.9284591674805
2015	44.4658393859863
2016	40.2305488586426
2017	45.7972183227539
2018	46.8422584533691
2019	50.2983741760254
2020	51.0051803588867
2021	53.6630058288574
2022	53.7340621948242