Year	% of GDP
1964	20.10885314445588
1965	19.946698571842347
1966	19.069860109172332
1967	19.50155076553475
1968	20.490414635240597
1969	21.000840572076374
1970	21.273722097814467
1971	22.59182703930475
1972	22.767955103126845
1973	20.95071567485768
1974	19.45051777976139
1975	19.50141438536304
1976	22.527291759499107
1977	24.758944212086366
1978	24.62081045601017
1979	25.11058409574894
1980	26.537193719425023
1981	18.68962493600754
1982	20.17619207628888
1983	22.83581103904237
1984	25.037769377560416
1985	25.25552413183499
1986	25.877058656890018
1987	25.647668221776563
1988	25.114954223666942
1989	25.364079361831795
1990	25.162796771410854
1991	24.603119249760187
1992	27.081146816238128
1993	28.277906336855324
1994	27.647917447989478
1995	26.865035507825002
1996	25.07676505348137
1997	25.607792524485404
1998	24.37295568745894
1999	30.464405851974778
2000	28.248982484543635
2001	28.14658307605846
2002	29.972908201325822
2003	29.35166397447155
2004	28.62671819983792
2005	28.21468636410144
2006	29.32320171445022
2007	31.38711361636815
2008	31.826929461979383
2009	33.764541962187174
2010	33.369636131360465
2011	33.27219811254065
2012	33.84932167827959
2013	33.46128696417336
2014	33.61255510550174
2015	35.95748169819252
2016	38.51799848070565
2017	39.452105977292184
2018	39.36244594917378
2019	40.13721875258922
2020	43.65287950206967
2021	42.80507772592499
2022	41.723904209454005