Year	% of GDP
1960	23.354126634912504
1961	22.37385802931827
1962	30.991873795525336
1963	29.183454347477213
1964	30.265251923603216
1965	29.459036391271514
1966	28.56926761039289
1967	28.0669781065221
1968	35.85672287983588
1969	38.04035781554495
1970	38.808964423286106
1971	47.35941544745283
1972	39.48161366404686
1973	48.066027173079085
1974	42.529688642288775
1975	49.45791684739199
1976	50.95523489183499
1977	48.855924376131654
1978	64.4113380256243
1979	58.371611369279776
1980	60.68169299084203
1981	59.50695734802902
1982	51.25884294306658
1983	45.19131424208898
1984	51.2832002374932
1985	56.14103741906927
1986	50.40860537379902
1987	53.27211026414604
1988	47.316794466242555
1989	48.74863639038391
1990	46.8267053667389
1991	43.31796603389178
1992	42.24174338151253
1993	47.16723816844947
1994	46.686886417624095
1995	46.35678335721005
1996	45.61338574549529
1997	44.83028681295947
1998	43.591905660842365
1999	48.75832597387259
2000	50.78811192870386
2001	47.90478417606811
2002	51.866045854490636
2003	51.85608805102184
2004	58.212593592506956
2005	59.63531204303204
2006	59.30971764958861
2007	59.87271377524272
2008	56.84278533567537
2009	44.75302244505737
2010	49.134917457939395
2011	52.623420718552815
2012	51.64701439169792
2013	46.25254925018394
2014	44.53503400833668
2015	41.56956663902148
2016	39.23685350512428
2017	36.3652931802114
2018	36.78075832173107
2019	33.567179564324874
2020	28.894590332229114
2021	31.178244311366356
2022	34.44822034803414
2023	31.02108962873308