Year	% of GDP
1970	50.6046445360787
1971	46.9886401383189
1972	45.67106552988846
1973	45.96224078424156
1974	47.53989913987595
1975	47.559683203379386
1976	48.77116897273295
1977	48.354640227047426
1978	48.835259864066416
1979	49.34674281677293
1980	47.006409342476275
1981	48.52988844428847
1982	49.92245415646438
1983	51.28185969388268
1984	47.91739963370257
1985	50.469355881400816
1986	54.38217122855652
1987	55.288862812367704
1988	54.907191582897
1989	55.32442467594254
1990	54.198398148715164
1991	52.70143442450282
1992	52.26738253054021
1993	53.60260009577621
1994	54.112990443084584
1995	52.96719169363428
1996	52.04014653460175
1997	51.31555097826932
1998	51.46249621866231
1999	51.6076760350902
2000	51.35144849412716
2001	52.67536986050122
2002	53.4403865180036
2003	53.24800146858378
2004	53.6583971352662
2005	53.57369712807035
2006	53.809221840387735
2007	54.78619721148314
2008	55.68869869363766
2009	54.719651100365226
2010	54.9906958458347
2011	55.17365980445956
2012	54.446230638618474
2013	53.905276186223915
2014	53.71305297301514
2015	52.89394638595874
2016	53.088247476729535
2017	52.81539925610833
2018	52.54953502340959
2019	51.886927042679055
2020	48.26673090745734
2021	49.141022922971125
2022	49.20694250314353
2023	48.17247180821035