Year	% of GDP
1960	7.27164357025779
1961	7.33090909090909
1962	7.23098995695839
1963	8.62909780547277
1964	9.3673809829334
1965	9.17862444334488
1966	9.77569869257527
1967	10.3463538784995
1968	11.2987497667475
1969	12.3557075673365
1970	11.7022833723653
1971	12.355871886121
1972	13.8866662294222
1973	11.5925885677027
1974	13.4121408438854
1975	12.654174662302
1976	12.9748700460219
1977	15.6936852803032
1978	20.3114965428337
1979	22.6258422891175
1980	17.1652111172907
1981	18.136344920887
1982	19.6242366835285
1983	21.0762247020995
1984	19.3025509606754
1985	20.6836643571978
1986	20.3556504006151
1987	20.1915891888595
1988	21.799560324711
1989	20.1805542873703
1990	19.6162954031276
1991	8.82120076810485
1992	9.05662817465076
1993	9.83335501886641
1994	10.9574085970256
1995	31.0668461690517
1996	29.8959938968505
1997	29.4419121347184
1998	28.7226150457865
1999	29.2577509374183
2000	28.8345435404203
2001	30.7326783184288
2002	31.0344654381181
2003	30.7454902363169
2004	32.3863508511647
2005	33.0761025922139
2006	34.6704920581445
2007	34.2395036816845
2008	29.5420065164895
2009	25.7400301594433
2010	24.6842616568486
2011	33.7387969525402
2012	34.0180437825091
2013	33.539360763445
2014	34.4936288797469
2015	39.3818504429952
2016	42.4756652883795
2017	43.8827525654567
2018	46.6984073251914
2019	47.0084929437321