Year	% (cumulative)
1970	8.3153600692749
1974	11.7449197769165
1979	15.4057998657227
1986	16.5848197937012
1987	17.1944999694824
1988	17.6466808319092
1989	18.0743408203125
1990	18.9686908721924
1991	19.3346195220947
1992	20.986759185791
1993	21.6585102081299
1994	22.3307094573975
1995	23.3354606628418
2004	31.8675899505615
2005	32.7204895019531
2006	33.4906616210938
2007	34.2771415710449
2008	32.2878189086914
2009	33.0457916259766
2010	33.8039703369141
2011	34.5561981201172
2012	35.2411804199219
2013	35.920539855957
2014	36.5774383544922
2015	37.2194213867188
2016	37.8982696533203
2017	38.5563888549805
2018	47.6645050048828
2019	40.003101348877
2020	49.8847312927246
2021	49.3100547790527
2022	50.8245239257812