Year	% of GDP
1970	1.7219862261303436
1971	1.138513038632513
1972	0.994845812498448
1973	1.6693697053809073
1974	2.080822342150441
1975	0.8505081665937991
1976	0.8456015806321188
1977	0.8989669417918886
1978	0.4704767122549124
1979	1.7614804936228379
1980	4.038295285181572
1981	1.6586416675726918
1982	1.2178034738620278
1983	1.8085992211576432
1984	0.4457414328747303
1985	1.268473258868331
1986	1.4027306490989975
1987	1.6003709285396222
1988	2.0326359923974833
1989	1.7205534931866977
1990	1.1059357470656022
1991	1.1277209327161903
1992	0.9517652145794004
1993	0.9595018497647083
1994	1.1182382159925337
1995	0.3845480090512653
1996	0.555411620604845
1997	0.3732805632257142
1998	0.27278448585061454
1999	0.2881237555064144
2000	0.42226528808122743
2001	0.4369082982060636
2002	0.48499355495228835
2003	0.1991103329330551
2004	0.324375464073502
2005	0.5562386714912934
2006	0.9563953627844577
2007	1.1221432981602408
2008	1.137178445114052
2009	0.8496621281174801
2010	1.353924345864384
2011	1.6559586695890625
2012	1.331175682694423
2013	1.1571524838972485
2014	0.836428169355682
2015	0.4780741208984322
2016	0.6463822397828713
2017	0.8453951494732637
2018	0.750040390822798
2019	0.7506386685174989
2020	0.9515471314692381
2021	3.112946478143917