Year	% of GDP
1970	21.652233492450257
1971	21.244956651862502
1972	21.06116301633005
1973	21.17944376406358
1974	17.877829667947722
1975	21.137413939820583
1976	20.420328403807595
1977	19.829031825394345
1978	22.54999381486199
1979	19.795607812099572
1980	17.91364526867494
1981	20.895961192082275
1982	23.218384609192814
1983	23.794411948633385
1984	22.995145878162255
1985	22.740238339454848
1986	23.58517753028115
1987	23.8591829165726
1988	23.809069265782874
1989	22.683859496280373
1990	18.35996907781689
1991	23.52397507162157
1992	22.290418965044065
1993	20.28069229303504
1994	19.50928427976015
1995	18.967161108837466
1996	18.509615599153708
1997	18.831802479760952
1998	19.5763557693948
1999	18.007341057684425
2000	17.56773603662916
2001	18.33652726027441
2002	18.32195516218414
2003	17.39430309216431
2004	16.80799288761032
2005	15.873553911156666
2006	15.325431146178628
2007	14.5006879021436
2008	13.720773439628056
2009	16.30109933853983
2010	15.461813642745541
2011	16.135143822802437
2012	16.04023732268443
2013	17.13057100427158
2014	18.264666712167717
2015	20.1155738201547
2016	19.1472015240564
2017	18.707982346229482
2018	18.364392457164982
2019	18.744626234108907
2020	20.71985846052647
2021	18.03693663062738
2022	16.08591399359214
2023	17.546516633561616