Year	% (cumulative)
1971	6.59897994995117
2006	30.3827514648438
2007	31.9244918823242
2008	30.6510429382324
2009	31.3353404998779
2010	33.8840599060059
2011	31.8824996948242
2012	37.2988014221191
2013	38.5403785705566
2014	40.1394805908203
2015	40.7780380249023
2016	41.5603141784668
2017	45.1280212402344
2018	43.3992462158203
2019	44.8981399536133
2020	49.1983184814453
2021	50.5028495788574