Year	% of GDP
1972	0.0014312417470360148
1973	0.028936308443229176
1974	0.017582473059832734
1975	0.007935549560151958
1976	0.053572592511566215
1977	0.07232299264756205
1978	0.05797421319903966
1979	-0.051460023939686565
1980	0.046917945006891594
1981	0.026469535783365573
1982	0.037570040592701935
1983	0.002294153202931904
1984	-0.0029241270381417947
1985	-0.02989439592292646
1986	0.011189931175101229
1987	0.013190725603420547
1988	0.006916144756054389
1989	0.0008613394730357186
1990	0.010249845748828366
1991	0.004491464244136875
1992	0.01173757640384046
1993	0.04236165497955593
1994	0.03301223097489605
1995	0.00499837818821928
1996	0.02913495519129215
1997	0.28889656753021487
1998	0.38023616689795614
1999	0.35030429099308497
2000	0.5253620892360888
2001	0.14544390456992448
2002	0.09557936764646713
2003	0.4459607832980916
2004	0.6894723355873407
2005	1.1706516712771113
2006	0.6358639039362491
2007	0.8177569225993936
2008	1.4496579149827649
2009	0.8795171402058217
2010	1.0689676555710617
2011	0.983399359466013
2012	1.1885039241583348
2013	1.7353201260547138
2014	1.4687030551810345
2015	1.4507824629943782
2016	0.8795283436612624
2017	0.6163417838073105
2018	0.753549137186867
2019	0.5432441407388205
2020	0.4078598945393922
2021	0.4141181549444744
2022	0.35530872353137166