Year	% of GDP
1974	1.0433667760342489
1975	0.8360027122661375
1976	0.6123536671371005
1977	0.31396191375724836
1978	0.45980280673644247
1979	0.2320086619416952
1980	0.35614288927109444
1981	0.4951961323769722
1982	0.44778062845056243
1983	0.4805418840180435
1984	0.45567114867824
1985	0.5264141263248054
1986	0.5236271043664489
1987	0.5152076783411498
1988	0.8220914924330153
1989	0.7665716205410233
1990	0.7594249938040377
1991	1.1287193407331357
1992	1.4758118775083897
1993	1.842929939867499
1994	2.2075265994152997
1995	2.1867998357694267
1996	2.477449610890999
1997	2.914607390081537
1998	2.966453396550332
1999	3.3200596523798422
2000	2.7276801554444567
2001	3.016111966752186
2002	2.770442347747446
2003	2.479104075221012
2004	2.8250034702072546
2005	3.384721674639014
2006	3.2544375504666485
2007	3.7217952143937283
2008	3.372024980790081
2009	2.3831439586236294
2010	3.340768937253699
2011	3.267321891107384
2012	2.8214111892116533
2013	2.887699796858397
2014	2.456579704734888
2015	2.348970239077735
2016	1.987300740068212
2017	1.807102401374076
2018	2.0454261498259925
2019	1.7227837030951554
2020	1.7323036380943333
2021	2.2077106850645727
2022	1.5655965487022268