Year	% of GDP
1960	21.391330254729628
1961	22.31892195395845
1962	22.48871695680206
1963	22.086786933203314
1964	22.472647702407002
1965	27.26825911727121
1966	28.62078370760978
1967	28.523658251128577
1968	30.41125541125541
1969	27.979039821928158
1970	27.911479944674966
1971	29.68536251709986
1972	29.265257114897704
1973	32.21917984762629
1974	32.14113098115031
1975	30.693950177935942
1976	33.7166184612989
1977	34.83079169903539
1978	31.023062514537315
1979	32.95550558506503
1980	33.14712832905732
1981	30.364727997704687
1982	24.989278175975826
1983	24.753838893776567
1984	23.889241076049398
1985	23.825039620103233
1986	24.548057091270334
1987	21.203027546384035
1988	24.342214176229156
1989	27.997004825543293
1990	31.716054516808008
1991	33.84899142770119
1992	33.408402950958305
1993	36.77512794232714
1994	44.513499686640614
1995	48.43512765189163
1996	54.759404663203846
1997	57.00264752952023
1998	57.79655780383888
1999	52.92894345844014
2000	53.972182998887995
2001	51.381700230628205
2002	52.730582054493965
2003	54.09402749517217
2004	58.42298345278083
2005	59.00584171531135
2006	56.05464205382766
2007	53.50901153929147
2008	51.32527668759138
2009	39.53025081975183
2010	45.75890619674826
2011	51.257686675553494
2012	50.902798821636175
2013	47.94149031947255
2014	47.56265473002061
2015	45.1667574562581
2016	42.71410478141821
2017	43.09385483701783
2018	41.45481656132466
2019	40.21896373889644
2020	35.87514010303779
2021	39.36539835992547
2022	42.43918179489615
2023	37.01057485845599