Year	% (cumulative)
1971	2.25573992729187
1981	1.06070005893707
2001	13.7046298980713
2008	13.8767404556274
2009	14.1082201004028
2010	2.74387383460999
2011	3.02867603302002
2013	3.4195396900177
2014	3.56120944023132
2015	3.7846667766571
2016	4.06072998046875
2017	4.23795986175537
2018	4.38589000701904
2019	4.51879978179932
2020	4.81907987594604
2021	5.02514982223511
2022	5.1059398651123