Year	% of GDP
1972	25.11557129714803
1973	25.80830879003358
1974	24.890864488677792
1975	26.36353950668028
1976	29.116606831189216
1977	28.792130182305293
1978	26.906835689058695
1979	25.928106085207574
1980	25.977006771771684
1981	27.16049226704215
1982	26.99816423905782
1983	27.06461853986316
1984	27.39770625482062
1985	28.453487354687756
1986	29.76856279309511
1987	28.358179295394653
1988	29.518325974837765
1989	29.732435954860613
1990	29.620149878292345
1991	29.821088299362607
1992	30.939262327840993
1993	31.391887538970526
1994	31.17673251424849
1995	39.938507747414995
1996	40.371070599414196
1997	39.588654146398696
1998	39.2375118282783
1999	38.138611364997324
2000	40.09835681095264
2001	37.96775174931549
2002	38.26353999703676
2003	37.62792506046168
2004	37.42614545408735
2005	37.59556006242144
2006	37.77162125427277
2007	37.41179866575436
2008	37.38450055336782
2009	35.765652252856995
2010	35.25775606852235
2011	36.72663360235962
2012	37.193153499107126
2013	37.543375375022634
2014	37.53123534899008
2015	37.37398585519313
2016	37.62677111779255
2017	36.70553819912418
2018	36.76958134514396
2019	36.666277547548965
2020	35.20866416286475
2021	36.64666645389845
2022	36.68202041937038