Year	% (cumulative)
1970	24.6340198516846
1980	39.0687599182129
1985	68.6503067016602
1990	60.1472396850586
1995	67.1211624145508
2000	72.5714111328125
2003	75.8660736083984
2004	76.7282562255859
2005	77.2418670654297
2006	78.360725402832
2007	79.1705627441406
2008	79.6283721923828
2009	74.2336730957031
2010	79.6276016235352
2011	80.9646987915039
2012	81.684814453125
2013	82.21142578125
2014	83.0794372558594
2015	82.7470092773438
2016	83.9012603759766
2017	84.1470413208008
2018	84.3937606811523
2019	84.6861953735352
2020	84.9098739624023
2021	85.3120422363281
2022	85.6600875854492