Year	% (cumulative)
1970	4.9966402053833
1989	17.1518001556396
2004	31.0003795623779
2005	38.4794502258301
2006	38.5653915405273
2007	44.5325698852539
2008	42.6883583068848
2014	55.0739898681641
2015	54.0044212341309