Year	% of GDP
1970	0.028591908480572314
1971	0.019689504575860207
1972	0.01731588712541886
1973	0.0430168308560334
1974	0.05333991655646683
1975	0.013847725806825457
1976	0.02601862097147768
1977	0.020221447964782483
1978	0.010493872897690024
1979	0.018530788842229945
1980	0.026144694455386416
1981	0.016460146233671466
1982	0.016358130945747604
1983	0.015028158628128686
1984	0.011411660303343759
1985	0.011195767207607017
1986	0.0046456485098147005
1987	0.006897149543269726
1988	0.05049769242610898
1989	0.053377545309718416
1990	0.023820931134855217
1991	0.015424694113632837
1992	0.014632331925943435
1993	0.010659266170500484
1994	0.012112060622204573
1995	0.013109345409850265
1996	0.006518263247667468
1997	0.010273762389769903
1998	0.0046197020483822165
1999	0.004334324418429751
2000	0.0070859745013309
2001	0.0035811614203070086
2002	0.0026963531991716443
2003	0.002702377869349037
2004	0.010527791330745648
2005	0.017047422159980896
2006	0.043228419348567325
2007	0.04778881848272333
2008	0.028995507068039633
2009	0.015220696119182
2010	0.15727575704446212
2011	0.21499873220233204
2012	0.14678404953940344
2013	0.13263665004573663
2014	0.12373761171505436
2015	0.0428921357453849
2016	0.07574032793550019
2017	0.128456027117435
2018	0.11471254051589423
2019	0.026130665205939593
2020	0.025966558675620192
2021	0.07321663934479992