Year	% of GDP
1970	1.7219862261303438
1971	1.138513038632513
1972	0.9948458124984476
1973	1.6693697053809073
1974	2.0808223421504417
1975	0.8505081665937992
1976	0.8456015806321188
1977	0.8989669417918885
1978	0.4704767122549123
1979	1.7614804936228377
1980	4.038295285181572
1981	1.658641667572692
1982	1.2178034738620278
1983	1.8085992211576432
1984	0.44574143287473017
1985	1.2684732588683307
1986	1.4027306490989975
1987	1.600370928539622
1988	2.0326359923974833
1989	1.7205534931866981
1990	1.105935747065602
1991	1.1277209327161903
1992	0.9517652145794003
1993	0.9595018497647081
1994	1.118238215992534
1995	0.38454800905126535
1996	0.5554116206048447
1997	0.3732805632257142
1998	0.27278448585061454
1999	0.2881237555064144
2000	0.42226528808122743
2001	0.4369082982060636
2002	0.4849935549522882
2003	0.19911033293305513
2004	0.3243754640735021
2005	0.5562386714912934
2006	0.9563953627844577
2007	1.1221432981602408
2008	1.1371784451140523
2009	0.8496621281174804
2010	1.3539243458643846
2011	1.6559586695890633
2012	1.3311756826944232
2013	1.1571524838972485
2014	0.8364281693556821
2015	0.4780741208984322
2016	0.6463822397828717
2017	0.8453951494732632
2018	0.7500403908227983
2019	0.7506386685174989
2020	0.951547131469238
2021	3.1129464781439173