Year	% (cumulative)
1974	1.48499000072479
1981	4.4469199180603
2001	22.0303401947021
2011	29.5816707611084
2012	30.6079006195068
2013	28.7448806762695
2014	30.7700500488281
2015	36.4869003295898
2016	36.9239311218262
2017	38.460880279541
2018	39.8609313964844
2019	41.1294212341309
2021	45.358528137207