Year	% (cumulative)
1970	12.3898696899414
1981	24.4446907043457
1986	28.6627006530762
1991	38.2585792541504
2004	63.005500793457
2005	66.2244567871094
2006	67.503662109375
2007	68.297233581543
2008	69.0540466308594
2009	69.7849578857422
2010	70.7405776977539
2011	72.1345901489258
2012	73.153190612793
2013	74.8973617553711
2014	76.7125701904297
2015	77.6334686279297
2016	78.4497909545898
2017	79.7997360229492
2018	80.2375411987305
2019	82.0418014526367
2020	83.1628036499023
2021	84.6579895019531
2022	85.0253372192383