Year	% (cumulative)
1971	46.9150199890137
1981	60.7611885070801
2006	93.0792999267578
2008	93.5975494384766
2009	93.8437271118164
2010	93.7161026000977
2011	94.1318817138672
2014	95.0256500244141
2015	95.3794403076172
2017	95.6606979370117
2019	95.7155609130859
2022	96.0956573486328