Year	% of GDP
1970	16.78872756086958
1971	17.77208994741456
1972	18.287714367545604
1973	18.568312753802775
1974	18.930926481835318
1975	21.14819759679573
1976	21.30525447092927
1977	21.836019047852993
1978	22.631488064312403
1979	22.965905279554867
1980	22.870760334862723
1981	24.103098062339445
1982	23.761882687137454
1983	23.418675559430817
1984	23.348215975481406
1985	22.83368858312736
1986	22.687508927644036
1987	22.52163951734227
1988	21.14320354447667
1989	20.455833338445196
1990	20.21728507328944
1991	20.862925839933354
1992	20.960931066536702
1993	21.294642652369113
1994	21.10193382551652
1995	21.298965124559892
1996	21.71838622110244
1997	21.1513979156766
1998	21.094918060834704
1999	21.2820398534755
2000	21.040197147631375
2001	21.313606338020442
2002	22.138881539245812
2003	22.48437234397415
2004	22.197212651316608
2005	22.093997631255046
2006	21.938788533960324
2007	21.61589481835836
2008	22.66614469480709
2009	24.19191347776795
2010	23.732686090024206
2011	24.04942657323313
2012	24.30335286076483
2013	24.312767257177764
2014	24.23389585147318
2015	23.615087446310476
2016	23.26203662389763
2017	23.032463086740123
2018	23.141466116350628
2019	23.04075280951925
2020	24.470485643659813
2021	23.74513149203285
2022	23.88852891944028
2023	24.24444444824507