Year	% (cumulative)
1971	31.8140296936035
1980	35.3287696838379
2006	83.5319290161133
2007	77.4283599853516
2008	76.5834197998047
2009	78.0875701904297
2011	79.2441177368164
2012	79.4694366455078
2013	80.6802368164062
2014	80.9459762573242
2015	81.7100296020508
2016	83.9914093017578
2017	81.491943359375
2018	81.9970397949219
2019	83.5010833740234
2020	85.0428314208984
2021	87.5258026123047
2022	86.0196762084961