Year	% of GDP
1970	40.54419168185292
1971	41.496608719521404
1972	41.29878579470143
1973	39.53054409614127
1974	37.85310065756218
1975	38.710929519632
1976	38.60854732036292
1977	39.03673269331073
1978	40.61464454352649
1979	40.514884430480066
1980	41.98082705056351
1981	41.640237088767066
1982	40.57520303264709
1983	40.037965792826526
1984	39.5339406671397
1985	40.1220298651925
1986	40.84892884450988
1987	39.886594252536426
1988	40.427526588100136
1989	41.27498113241793
1990	42.41789608245467
1991	45.01123614113169
1992	48.543859655939585
1993	49.121475522104454
1994	47.9581319626055
1995	48.24558390451495
1996	47.96464936856687
1997	48.51360053532828
1998	49.4739567336106
1999	49.19884662076492
2000	49.192780342158926
2001	50.1329573150789
2002	49.6992551244869
2003	49.49111854450122
2004	48.60079270982846
2005	48.50670297175927
2006	48.50652581957779
2007	48.866111266145815
2008	48.53542826494915
2009	50.0863765332647
2010	49.33969106158211
2011	49.11470023806159
2012	49.94073595638507
2013	50.82020739780037
2014	51.542619170319846
2015	54.374007246953695
2016	55.0808771848764
2017	55.05358042275306
2018	54.962908225358255
2019	55.71996539922952
2020	55.565385047789405
2021	54.13809869011522
2022	53.97365688377532
2023	55.08387392833166