Year	% (cumulative)
1970	2.90000009536743
1989	14.115650177002
2004	31.1855907440186
2005	39.7559509277344
2006	37.7236709594727
2007	45.1990814208984
2008	45.169979095459
2014	54.7882804870605
2015	54.8526992797852