Year	% (cumulative)
1971	7.19999980926514
2005	29.3052196502686
2006	28.5336208343506
2007	31.5124893188477
2008	31.1592292785645
2009	31.6965103149414
2010	32.1887702941895
2011	31.6273803710938
2012	32.0577507019043
2013	30.2877502441406
2014	30.5605792999268
2015	31.209810256958
2016	31.78830909729
2017	32.5241966247559
2018	33.2913818359375
2019	35.0022811889648
2020	36.9629898071289
2021	38.0045356750488
2022	39.0761184692383