Year	% of GDP
1963	16.975308641975307
1964	22.9166666666667
1965	20.919540229885065
1966	24.105461393596997
1967	23.508771929824537
1968	26.210350584307157
1969	28.448275862069007
1970	29.308005427408435
1971	27.838827838827925
1972	23.515981735159823
1973	20.57522123893803
1974	42.234123947972364
1975	27.74746687451285
1976	31.841526045487946
1977	26.658767772511887
1978	35.38135593220332
1979	33.64661654135334
1980	48.19630872483218
1981	40.07751937984493
1982	52.76232851316275
1983	43.99328859060393
1984	51.21096239643085
1985	48.40875912408762
1986	43.93032117583024
1987	41.3958444326053
1988	39.092453288036815
1989	39.89805375347542
1990	26.24316622077471
1991	25.27552121797424
1992	20.97346921100496
1993	17.47442206251992
1994	25.820617355853226
1995	22.757328415021814
1996	24.948764210268227
1997	22.48034552676997
1998	23.071467969427175
1999	21.339804508218364
2000	20.15666040648833
2001	20.509525890463703
2002	21.438141493408622
2003	23.229600729514143
2004	23.574361381638017
2005	25.18263859045976
2006	25.047696448848033
2007	23.94495957275742
2008	24.630048832342784
2009	25.150193830019745
2010	26.962985728571383
2011	30.628526852129433
2012	32.081966195893244
2013	33.17304650065111
2014	28.337564763767435
2015	25.97607505420631
2016	25.99637001398073
2017	24.87260373695705
2018	24.223952463886896
2019	23.812452710453734
2020	23.26352858316704
2021	23.629548446508128
2022	25.599171080440914
2023	23.905223970476413