Year	% (cumulative)
1971	1.7739599943161
1981	0.765309989452362
2001	14.1120500564575
2008	14.563099861145
2009	14.8260498046875
2010	2.57172775268555
2011	2.88528275489807
2013	3.40446996688843
2014	3.6945264339447
2015	3.90128803253174
2016	4.18226003646851
2017	4.28623008728027
2018	4.71645021438599
2019	4.79588985443115
2020	5.31642007827759
2021	5.31930017471313
2022	5.45771980285645