Year	% of GDP
1967	-0.9566050443771967
1968	-0.6825170142787744
1969	-0.7823057612034514
1970	-0.9006559492610311
1971	-0.2332092692303256
1972	1.180650425760307
1973	4.198211657566649
1974	7.122505492678041
1975	2.865843123386771
1976	3.5809241698138585
1977	1.9092046497404098
1978	-0.6891068170880139
1979	3.281136205242113
1980	3.973782684683833
1981	2.390938325285255
1982	0.4313793047857466
1983	-1.0083566467055434
1984	-0.500129139071813
1985	-0.31125931742867863
1986	-1.883615277437512
1987	-0.17324273529008138
1988	-0.8641553296717461
1989	-0.605499745812601
1990	0.3803414041731301
1991	-0.7589147154205378
1992	-1.7676650561608156
1993	-2.265098498248239
1994	-1.0023622254666584
1995	-0.5782113645644529
1996	-0.2041399850756278
1997	-0.8870622256743417
1998	-1.8588289460981748
1999	-0.1823721105553986
2000	1.4010270037830104
2001	0.7867799529322035
2002	1.4012763695659345
2003	2.0774223792397883
2004	1.883058883505086
2005	2.756779046028484
2006	2.7419242800598376
2007	1.4247734947343602
2008	1.2820063925299792
2009	-1.0071412593416262
2010	0.3389779519537015
2011	0.47167869345473434
2012	-0.5126144374608295
2013	-0.8503448897192385
2014	-2.2440746753393164
2015	-3.161955707673723
2016	-2.4661521307394736
2017	-2.4648150063909178
2018	-1.9561316523261816
2019	-1.526943734581348
2020	-1.379439099451215
2021	-1.1534085703096935
2022	-1.1540723747157138
2023	-1.1861527586754228