Year	% of GDP
1960	16.796248891010883
1961	17.777775824730156
1962	17.9979254036901
1963	18.978357492590046
1964	20.076335075826705
1965	20.502537590679427
1966	17.75905863706771
1967	18.200492484080822
1968	17.826961870589923
1969	17.305472867646706
1970	18.42832468017406
1971	19.202176181867657
1972	18.57900215408423
1973	18.263838188304813
1974	20.35049200837469
1975	19.079326474361586
1976	18.79107240845758
1977	21.24199217817609
1978	22.51622147426781
1979	22.515581232103557
1980	20.714114816600368
1981	20.376655874334197
1982	21.063321130498768
1983	20.559037650948035
1984	21.836781442183938
1985	22.820235380341135
1986	23.983150225531247
1987	23.79931247459644
1988	25.02241308031996
1989	26.56522492338718
1990	27.271495668684086
1991	24.35729478025732
1992	26.060939653864658
1993	23.320208859132414
1994	25.036402002385245
1995	24.65094332380652
1996	21.213169942035016
1997	22.20594729803132
1998	21.92217265725202
1999	27.348259898478588
2000	24.304140720496484
2001	26.563461560411938
2002	26.127688599404088
2003	26.873068760117853
2004	29.41219720255196
2005	30.456103149158377
2006	30.632120345224124
2007	33.38070816862283
2008	31.291329280482756
2009	32.22758728587218
2010	32.554525787898356
2011	31.729562960481832
2012	30.47421719725298
2013	28.095567991947306
2014	28.311034241222526
2015	28.064424987851595
2016	28.057813409471024
2017	29.48161397371123
2018	30.272153539770148
2019	28.7216122867674
2020	27.02615171966179
2021	29.55906252532069
2022	30.463576819634287
2023	30.951665604240976