Year	% of GDP
1960	18.135720574744965
1961	19.44351124586971
1962	20.911096864023786
1963	22.244243318432392
1964	23.510119029671987
1965	25.609756097560975
1966	26.287262872628723
1967	25.802922745811486
1968	23.684210526315788
1969	20.7020702070207
1970	18.781725888324875
1971	16.354625550660792
1972	13.335955940204563
1973	14.517556801416347
1974	17.215676845395528
1975	18.979630687226347
1976	21.391035548686244
1977	23.155818540433927
1978	21.126904591471522
1979	19.410356180784195
1980	21.338912133891213
1981	24.808013355592653
1982	26.051385101191332
1983	25.846716179958783
1984	25.01163837248999
1985	22.982625710177047
1986	23.967289541060033
1987	26.896499469616607
1988	23.88953223871955
1989	22.66417748308133
1990	24.136635305961843
1991	24.228585766709532
1992	26.35775443249237
1993	27.996672719724252
1994	28.623651024084793
1995	30.054444800292814
1996	26.193770982134552
1997	28.182324119643383
1998	30.069156293222683
1999	27.410947345178105
2000	24.902729005888744
2001	23.48663221677857
2002	22.379125987912598
2003	22.008716057649256
2004	20.53234393666293
2005	19.40074505726584
2006	27.720034858339908
2007	27.90766860707362
2008	30.495850256128058
2009	35.937758582169174
2010	30.775260026840773
2011	28.33111948022875
2012	31.8383799827492
2013	31.06332224288515
2014	29.253791399776368
2015	31.639398970879313
2016	28.475721828648286
2017	28.87808595214632
2018	29.098518951299866
2019	31.641939502348126
2020	36.143050953833715
2021	31.529241052791967
2022	27.887294990783978
2023	28.943628773915727