Year	% of GDP
1960	22.9486254379045
1961	24.2727063541632
1962	24.3280544574142
1963	22.591354493343
1964	20.5169986030584
1965	20.6421108319005
1966	21.2949443951695
1967	21.5682097888857
1968	23.5278367077918
1969	25.6139911212946
1970	25.802151120752
1971	23.7019360301759
1972	21.7531405908846
1973	19.0035367659154
1974	29.6184053799196
1975	29.7866248012876
1976	28.5948860540703
1977	27.3613219576302
1978	27.8080940134383
1979	27.1973735234271
1980	30.4646229252816
1981	32.8222645759247
1982	34.1744557517765
1983	36.7322749437894
1984	37.3224853912167
1985	35.6275208256014
1987	25.4899818775378
1988	23.2207245066807
1990	25.9105916549165
1991	23.4043091760028
1992	25.2421600275776
1993	28.6713526450495
1994	31.0736127250167
1995	33.6634295845069
1996	35.3234826301522
1997	36.4758451431847
1998	35.2185505194702
1999	31.654183439449
2000	20.9474743929536
2001	21.9066125992657
2002	21.5233089569655
2003	21.0762350135313
2004	22.1991386566001
2005	22.7527186089507
2006	27.3293271996088
2007	30.5665682234072
2008	31.3428821283832
2009	30.0588498093341
2010	32.352958637797
2011	34.9599738877775
2012	37.7448515262879
2013	39.4836916913458
2014	42.3846056970014
2015	46.9053935998569
2016	47.0541978052353
2017	49.8054213986163
2018	49.5673177507761
2019	51.5551729249983
2020	54.3076483702713
2021	51.1293782838916
2022	43.9548659900929
2023	42.5442086062413