Year	% of GDP
1960	3.0453323444887475
1961	0.6579228435937967
1962	3.439686869884948
1963	6.945532217871128
1964	7.507672073651907
1965	10.792331411717388
1966	12.912644500059587
1967	14.13493759729808
1968	16.403171111722116
1969	20.803731328597014
1970	21.02121000799415
1971	21.65832118789593
1972	26.452910639220452
1973	27.6222632652276
1974	29.316364543229888
1975	29.44415713068244
1976	31.3962168575123
1977	32.01391776533033
1978	33.20699772050563
1979	36.198039846366335
1980	39.852181711352316
1981	42.68812598840274
1982	43.53466034160064
1983	45.569919596405484
1984	45.85170523167763
1985	41.853715359691456
1986	40.74712601515674
1987	41.3567657164184
1988	43.681256468465705
1989	44.4401673503674
1990	45.905155598554735
1991	47.509638057212115
1992	47.84480017710745
1993	47.36471782449698
1994	48.861005336038964
1995	50.88005861968949
1996	50.62447892576958
1997	51.45999983856257
1998	51.05394741519248
1999	48.71356045195809
2000	47.64061862292643
2001	42.14510186119827
2002	41.9771862199989
2003	43.050554938663126
2004	47.68290362232749
2005	50.254979480357086
2006	51.98696809096253
2007	54.09790918585274
2008	49.93586224217132
2009	50.9671045293021
2010	53.97059331745265
2011	54.14754734282784
2012	53.836085044763614
2013	52.92232214332985
2014	52.78458665906
2015	52.65101107796756
2016	53.28159111517857
2017	54.60863471082191
2018	55.477884456694525
2019	54.39328029339103
2020	55.80768961173678
2021	60.40770101925255
2022	62.290841615854006
2023	58.4580461348376