Year	% (cumulative)
1975	6.76938009262085
2003	36.6395492553711
2006	26.8970508575439
2008	25.2999992370605
2009	27.0799999237061
2010	27.6000003814697
2011	29.8799991607666
2012	29.4400005340576
2013	29.0300006866455
2014	29.9799995422363
2015	30.1499996185303
2016	30.2099990844727
2017	31.6200008392334
2018	31.8500003814697
2019	33.1399993896484
2021	36.7900009155273
2022	38.1100006103516