Year	% (cumulative)
1971	58.5470581054688
2004	91.0170516967773
2005	91.0428466796875
2006	90.5101776123047
2007	91.8894195556641
2008	91.2220001220703
2009	91.0639801025391
2010	91.3669128417969
2011	91.0426406860352
2012	91.4148635864258
2013	91.3135986328125
2014	91.4662017822266
2015	91.5310592651367
2016	91.5883026123047
2017	91.0746002197266
2018	91.7721481323242
2019	91.3704071044922
2020	92.6747283935547
2021	92.4684295654297
2022	92.6664123535156