Year	% of GDP
1970	38.02137872120403
1971	36.792319137135884
1972	33.18309656708911
1973	42.73052072909958
1974	39.95576986532844
1975	44.1848148537946
1976	41.53034437080378
1977	40.47731788429534
1978	50.19225907731746
1979	46.17593923621946
1980	45.28634067311817
1981	45.75337626305711
1982	40.31349904348157
1983	36.98040462319157
1984	39.4243482029535
1985	41.00662908934142
1986	35.65976398348379
1987	38.80297377535091
1988	32.97416683022465
1989	33.55905099997416
1990	33.14072051442356
1991	31.92157719360546
1992	30.59935284214853
1993	34.104889034570846
1994	33.87190112929383
1995	33.734438674326825
1996	32.86768827668352
1997	31.442934595715506
1998	30.12225682981503
1999	34.07775056897266
2000	34.69701577827366
2001	32.72246656858668
2002	34.6737153111774
2003	34.22108729903124
2004	37.78996618958524
2005	39.621472880626726
2006	39.45565657776599
2007	40.24311342531967
2008	38.328729682378075
2009	30.055794334463332
2010	32.28174735605962
2011	34.89707758887151
2012	35.42222356895004
2013	31.407433031647102
2014	30.290229642920707
2015	28.041051088964792
2016	28.089026664602844
2017	27.318128059246305
2018	29.02104382351174
2019	27.22018152756618
2020	23.44608440803043
2021	25.797651178823696
2022	28.77597565469827
2023	27.132976357512046