Year	% of GDP
1964	33.572113142010814
1965	36.2290611608882
1966	35.90604026845637
1967	40.26128266033254
1968	41.76317731924784
1969	37.422006900095425
1970	36.40798489538229
1971	39.27124727948363
1972	40.89422028353326
1973	38.08685378523913
1974	37.54208390106048
1975	38.62345485826722
1976	41.72811335908367
1977	41.89134802764564
1978	40.00811196903136
1979	41.00800988729258
1980	41.4106447425357
1981	43.58458442965485
1982	44.157058273605486
1983	45.15217738926496
1984	44.45869206814435
1985	39.03098332045895
1986	42.043786764705885
1987	33.970754582830956
1988	39.54709236928306
1989	39.73631781959136
1990	31.799849572093592
1991	24.109600934177795
1992	19.922082740708678
1993	22.198665600124684
1994	19.194588774162362
1995	17.130552602885963
1996	13.736814668385882
1997	13.373333860602116
1998	12.962284807676394
1999	12.43524903453164
2000	12.490227856322427
2001	40.61356429197094
2002	39.34943285935768
2003	38.06079197483741
2004	35.17173815889827
2005	35.31626363638974
2006	34.63128005324709
2007	33.77117299836466
2008	34.39136973442917
2009	33.611459573930844
2010	35.264443439951705
2011	35.02415835851446
2012	32.33057765083804
2013	28.47954808710685
2014	29.826781321908356
2015	33.929171446017456
2016	32.756415229735744
2017	31.995748776750233
2018	32.346628675155294
2019	32.80390679503279
2020	30.98335843552989
2021	32.32502246922293
2022	28.87567586362767
2023	24.66858860634733