Year	% (cumulative)
1970	1.29999995231628
1989	11.2931699752808
2004	31.3533592224121
2005	41.0284805297852
2006	36.9118118286133
2007	45.894229888916
2008	47.5915985107422
2014	54.5319519042969
2015	55.6828804016113