Year	% (cumulative)
1971	0.745819985866547
1980	1.26435995101929
1990	3.25271010398865
2006	6.43275022506714
2007	5.53344011306763
2008	5.10541009902954
2009	8.14274024963379
2011	8.23906993865967
2012	8.8790283203125
2013	9.15760803222656
2014	8.83205986022949
2015	9.59994029998779
2016	9.6416597366333
2017	11.1219234466553
2018	10.0752000808716
2019	11.3803396224976
2020	10.9258699417114
2021	11.6570901870728
2022	11.4243383407593