Year	% (cumulative)
1970	7.62652015686035
1980	9.20129013061523
1990	11.7322797775269
2001	13.824390411377
2005	15.1846103668213
2009	17.4017601013184
2010	17.5320205688477
2011	18.4980792999268
2012	19.0952892303467
2013	19.4461002349854
2014	19.782039642334
2015	20.4339008331299
2016	20.1989002227783
2017	20.7189311981201
2018	21.3530330657959
2019	21.4443264007568
2020	23.0922908782959
2021	24.2712860107422
2022	24.4678077697754