Year	% of GDP
1960	3.7667802043678624
1961	4.883052933935166
1962	4.82275350370981
1963	5.485986881335719
1964	5.684138869979578
1965	6.33245382585752
1966	7.807909604519773
1967	9.001670843776106
1968	9.732230228627346
1969	8.161337209302326
1970	10.111919855991234
1971	12.676771953594715
1972	13.562616822429908
1973	12.297714249732385
1974	12.834338796647268
1975	15.911405295315681
1976	14.354813543454517
1977	17.770841723721308
1978	19.109610343448704
1979	18.294241467448504
1980	16.94738216477347
1981	17.739714236529522
1982	18.599282396462048
1983	19.84597723141682
1984	20.49482863516528
1985	22.858072088123418
1986	22.651042952357443
1987	25.72342793544797
1988	30.806865003406546
1989	30.970149253731343
1990	31.85689077113111
1991	33.345886259493724
1992	33.1916343027298
1993	24.97607990596726
1994	9.08872601889074
1995	9.177594328359598
1996	10.915613767763986
1997	10.794943613498281
1998	10.773698494954004
1999	10.211410373852159
2000	9.453296547109774
2001	9.081867225804537
2002	9.585879250847789
2003	10.148136715484842
2004	10.065238984038434
2005	9.840460976647787
2006	9.40791898209265
2007	8.67980436647481
2008	8.453968148843277
2009	8.684927816835948
2010	7.578283936006634
2011	7.51615952950012
2012	7.0758132508186575
2013	6.023734528946481
2014	6.819983358574823
2015	7.52231130815079
2016	7.6861252302196235
2017	8.127238235628544
2018	6.847766479563772
2019	6.78893009670748
2020	7.70383074981216
2021	8.668314753490941
2022	7.996352899471047
2023	8.300550540351683