Year	% of GDP
1970	27.373283752588147
1971	27.683446251762327
1972	27.267764629003917
1973	26.9274551744989
1974	26.16778236571321
1975	24.54864272429814
1976	23.94961841567042
1977	24.387061612495284
1978	24.290633130622837
1979	24.442870470002532
1980	25.169700002954848
1981	24.43260063481642
1982	23.351895922397947
1983	22.741002205277077
1984	22.07364105645541
1985	21.915896722617777
1986	21.8038441731271
1987	22.167335198594277
1988	22.883312013287558
1989	23.48242363310019
1990	23.867925613688058
1991	23.6715775984552
1992	23.15709719740302
1993	21.81680396942362
1994	21.657728242256972
1995	21.603065343610314
1996	21.42887986218355
1997	21.34429817253557
1998	21.778255732943474
1999	22.34168545233935
2000	22.765015710769248
2001	22.32986806112381
2002	21.641322757212446
2003	21.543836759274722
2004	21.645731820900988
2005	21.98899873299952
2006	22.662659022871225
2007	23.16000328378572
2008	22.851223187301304
2009	21.045141865237383
2010	20.56087213384736
2011	20.628169168302605
2012	20.12118792569721
2013	19.52466602020313
2014	19.47474816882736
2015	19.880653408460667
2016	20.255095802179504
2017	20.591208700240905
2018	20.9589667469228
2019	22.149317101579214
2020	22.00534759794813
2021	21.859450956061416
2022	22.340012115281304
2023	22.09784871678733