Year	% (cumulative)
1972	2.89938998222351
1982	4.2094202041626
1992	7.75792980194092
2003	7.12910985946655
2005	3.51971006393433
2006	2.81756997108459
2007	7.83804988861084
2008	9.05545997619629
2009	10.3433399200439
2012	9.43074035644531
2013	11.9699697494507
2014	12.2750301361084
2015	12.3207101821899
2016	11.9234104156494
2018	13.1721801757812
2019	13.6071195602417
2020	13.8301200866699