Year	% of GDP
1960	0.36899862976873504
1961	0.9389057312391742
1962	0.41797128780231807
1963	-0.3856795542225421
1964	0.4470973011202352
1965	-0.2874205528639867
1966	2.6294617113672
1967	5.275102310118411
1968	5.279563422174777
1969	5.781030625959839
1970	7.4875877124426795
1971	4.638462929258364
1972	4.759648503237256
1973	4.4664259507673165
1974	3.9791264900301075
1975	3.1066027642425094
1976	5.773786335760235
1977	4.474225498446914
1978	2.6802450477726514
1979	0.2821286299413999
1980	37.65399169937129
1981	29.93417574356485
1982	21.89522792704984
1983	23.007853307738717
1984	25.056514371190147
1985	16.11419320608659
1986	18.6531555603534
1987	23.1509198323457
1988	14.273166003935323
1989	39.6981570238154
1990	29.321863406861766
1991	26.862807717946925
1992	31.92855710020171
1993	32.62862110281432
1994	29.353557478521935
1995	5.470222837312109
1996	7.693379148632999
1997	5.564050605993039
1998	7.7390950996983054
1999	8.062173418324837
2000	7.392760642346265
2001	13.614590085682696
2002	4.4197000123101775
2003	7.082288403407907
2004	11.290256142055753
2005	8.835799976462996
2006	13.182256628739438
2007	15.40761027024705
2008	19.80314527570953
2009	15.561854152770255
2010	12.90125934430399
2011	12.307338981214459
2012	11.078561575248443
2013	6.689642387998811
2014	11.085065978494967
2015	11.552775230028287
2016	13.716422946329917
2017	12.268239877002172
2018	14.376649087032487
2019	13.997163815617734
2020	4.297468004396377
2021	6.189337752177411
2022	11.8087176123604
2023	14.791303643981477