Year	% of GDP
1970	54.37226492684831
1971	53.62495318000927
1972	53.69602097881142
1973	53.988079394520426
1974	54.473000117876644
1975	56.76491038570126
1976	57.91082514404423
1977	58.764728613070616
1978	58.08981438086713
1979	58.748608030341956
1980	58.65518333116903
1981	58.45164426361683
1982	58.52067159691222
1983	59.39033935654518
1984	58.21620277159496
1985	57.57354484893876
1986	57.11011419989763
1987	57.088574258053924
1988	55.88833809341204
1989	54.75438274642852
1990	53.997805577660706
1991	55.41818594902195
1992	56.62494551388436
1993	56.62092058938168
1994	55.850565445729174
1995	56.34086539677322
1996	57.192819498028314
1997	57.760743790783984
1998	57.47885387128528
1999	57.822711929482104
2000	56.66732842736888
2001	56.77554044788615
2002	56.90473055086237
2003	57.17474769856389
2004	56.8537499914388
2005	56.11535327708606
2006	54.36508510689142
2007	53.01300420649711
2008	52.53663764598635
2009	54.03003238891283
2010	53.310695716124876
2011	52.88843556780299
2012	52.92395797029224
2013	52.98976804521338
2014	52.504050616847906
2015	52.8681404124669
2016	52.853582522135035
2017	53.37112118430638
2018	52.47275813562457
2019	52.40412801280618
2020	51.88965925106375
2021	49.63260050700131
2022	50.38778267049684
2023	51.608615708419215