Year	% (cumulative)
1975	5.87022018432617
2003	32.0084114074707
2006	22.2492809295654
2008	20.7900009155273
2009	20.4699993133545
2010	21.2999992370605
2011	23.0599994659424
2012	24.5200004577637
2013	24.7000007629395
2014	25.4599990844727
2015	25.3899993896484
2016	25.5
2017	26.4599990844727
2018	26.8400001525879
2019	27.8999996185303
2021	29.8500003814697
2022	31.0300006866455