Year	% of GDP
1968	24.71525536824498
1969	24.942575793398667
1970	21.563765600462848
1971	17.917299996897977
1972	18.271919312961852
1973	20.915457367699084
1974	13.20216355696705
1975	21.732814684252112
1976	24.251571213596527
1977	32.56105628228708
1978	41.597678023681524
1979	34.24394448020684
1980	27.300363001273336
1981	30.093187480248396
1982	39.118351372650544
1983	47.6766124117162
1984	45.222484213322964
1985	36.642414128476446
1986	35.7862865660518
1987	37.13259236409072
1988	35.20281738720013
1989	38.07738086902945
1990	31.37324782929459
1991	36.39089939738598
1992	35.9852277198409
1993	33.45415842478889
1994	26.07036327361081
1995	27.703885846279945
1996	26.630999123177563
1997	26.029469023416258
1998	26.45601081379631
1999	23.179577830581476
2000	24.761179769826406
2001	23.926889456580298
2002	23.64399413801542
2003	23.977021521626042
2004	24.097505573116294
2005	24.903332951458882
2006	30.11269643235416
2007	34.92587695748149
2008	33.99112884111638
2009	37.76972090904515
2010	32.98003763169706
2011	29.25911767255989
2012	29.00939165768312
2013	30.496301369087707
2014	33.313459293467446
2015	36.939956965879404
2016	29.746266266266264
2017	28.248565024261254
2018	24.757070692593825
2019	26.108990026769547
2020	24.811504704710377
2021	24.36816006906471
2022	23.292390952151514
2023	27.377807463388947