Year	% of GDP
1960	0.1278229562939135
1961	0.7250553081036397
1962	1.5308689904907755
1963	0.9647104839032021
1964	0.700931923987758
1965	0.609451455966374
1966	0.5558886400608589
1967	0.41270214350665313
1968	0.44036767408689315
1969	0.4291326677315048
1970	-0.19555800386836708
1971	0.11102146945123792
1972	0.8407410421919579
1973	2.1523893820300835
1974	3.6472054019672218
1975	0.4775133894778083
1976	2.2540175447632684
1977	1.7128797119609693
1978	1.6647890067035522
1979	4.10629570780541
1980	2.083982640213275
1981	-1.6002791001981755
1982	-0.05056575943591213
1983	1.001258949597407
1984	1.766302844520549
1985	0.9115765548123278
1986	-0.24698389055878067
1987	2.5270808874768846
1988	1.433450244562298
1989	0.9255170418238023
1990	0.8266416667761085
1991	0.45717612447859324
1992	-0.22194635226122017
1993	-1.7285699236191014
1994	-1.0234805429529459
1995	-0.9039019899995466
1996	-0.6405002679966039
1997	-0.13187822032936225
1998	0.5729945293706074
1999	1.5396414887526504
2000	1.5846757991754075
2001	1.132703853119235
2002	2.020712284275227
2003	2.0463477282178637
2004	1.9927490784901778
2005	3.2070440977541956
2006	4.276861532036477
2007	4.470467470762369
2008	3.8184341761785774
2009	2.4698963144009056
2010	2.0820766690183063
2011	1.723429527811188
2012	1.4590230787334555
2013	0.885573786862679
2014	0.7172261653107732
2015	1.2812228286375351
2016	1.1472995619004003
2017	1.0159122402965828
2018	0.603261260323066
2019	0.7596255534801237
2020	1.5997095122010734
2021	2.0025860285683486
2022	2.180792972840976
2023	1.5118059919205713