Year	% of GDP
1960	17.4631348989623
1961	16.7582417582418
1962	17.8337315444465
1963	17.4182916781104
1964	16.0732600732601
1965	14.8973736482013
1966	13.5975135975136
1967	12.7741833675241
1968	14.1709334383616
1969	14.7517256735694
1970	12.2907296351824
1971	12.3678051959594
1972	11.8317533568708
1973	10.2777082812109
1974	13.2173169139332
1975	16.6000829156145
1976	17.1016913760702
1977	18.7176457691324
1978	18.3207435157322
1979	18.9957508878742
1980	13.9363765430743
1981	25.8951082676564
1982	24.7087638047738
1983	25.8481203007519
1984	26.2158227848101
1985	27.1986595174263
1986	29.2242630385488
1987	28.895145631068
1988	28.1332792207792
1989	26.5301298701299
1990	25.5256784968685
1991	22.0586311111111
1992	22.2704529115744
1993	23.7657860824742
1994	27.9036571428571
1995	32.7338235294118
1996	36.5343940714908
1997	39.6936066190297
1998	46.5550104384134
1999	52.0018205461638
2000	51.9532784475154
2001	54.9311402286033
2002	54.6553972024281
2003	53.897628742515
2004	54.0429142798269
2005	51.1654340531105
2006	49.2909797353084
2007	45.5152215665951
2008	42.7975137803462
2009	36.0927133507004
2010	33.0722952214189
2011	31.1549232899382
2012	27.388449729504
2013	26.2224394958043
2014	25.6066805392918
2015	26.316393760305
2016	34.1348626252639
2017	27.0698246737254
2018	24.2952790707642
2019	22.8487308972763
2020	25.7894742547866
2021	28.2307543894277
2022	30.847002116672
2023	29.2578215393464