Year	% of GDP
1970	0.281275384592781
1971	0.32622542347477984
1972	0.38178704464761476
1973	0.4508248300332184
1974	1.8389726208002724
1975	1.6320105199576727
1976	1.812545979186121
1977	1.788955662214281
1978	1.516029539849006
1979	2.846775080427209
1980	3.351568281807053
1981	2.697134105488764
1982	1.6478742974335778
1983	1.7105159921046178
1984	1.6033921595458849
1985	1.3983322117271861
1986	0.5879060091968652
1987	0.7111720969212141
1988	0.6623159901789071
1989	0.9309452838238809
1990	1.1624313413253828
1991	0.6582162457016763
1992	0.653357991610405
1993	0.6075737951398122
1994	0.5216632614449515
1995	0.522176489729986
1996	0.683543778949803
1997	0.5752651509447603
1998	0.29391473412581864
1999	0.49681144807492605
2000	0.9611090025631592
2001	0.7134814657592536
2002	0.7007037502812073
2003	0.8015807169362422
2004	1.0006119965133395
2005	1.3611045567810875
2006	1.4924143845581719
2007	1.4656981058921215
2008	1.9656865719239018
2009	1.1244322516262122
2010	1.3722874963169895
2011	1.9912033472857735
2012	1.9393479438732824
2013	1.873103393751101
2014	1.7009279925263818
2015	0.816068875903396
2016	0.7003507740071466
2017	0.913142370435566
2018	1.3023662074201243
2019	1.1779711371276258
2020	0.657174647838026
2021	1.2418542278250355