Year	% (cumulative)
1970	2.5
1982	5.94714021682739
2004	12.6132898330688
2007	13.871729850769
2008	20.1836795806885
2010	17.9328308105469
2011	14.7655096054077
2012	11.4171266555786
2013	17.4478893280029
2014	12.5942678451538
2015	19.3345603942871
2016	13.0043392181396
2017	21.9180698394775
2018	14.550630569458
2019	15.434814453125
2020	18.5807704925537
2021	18.9309692382812
2022	19.5457077026367