Year	% (cumulative)
1970	75.1112365722656
1985	91.4787979125977
1990	93.9687271118164
1995	94.8868637084961
2000	96.203727722168
2003	97.5143432617188
2004	97.7677612304688
2005	96.8958511352539
2006	98.1523818969727
2007	98.3729629516602
2008	98.3510208129883
2009	96.2651290893555
2010	97.5759201049805
2011	98.6488342285156
2012	98.8209075927734
2013	98.8438873291016
2014	98.8828659057617
2015	98.2952194213867
2016	98.8732070922852
2017	98.9161529541016
2018	99.0644760131836
2019	99.1236114501953
2020	99.1211929321289
2021	99.0732421875
2022	99.1590423583984