Year	% of GDP
1970	0.756088223327845
1971	0.7479604694162336
1972	0.8144949734943843
1973	1.080770049710234
1974	3.5083747914753944
1975	3.362504700355191
1976	3.196396152647007
1977	3.2271300591415155
1978	2.832117216596863
1979	5.334589185761744
1980	5.975722509934825
1981	4.203374615363091
1982	2.4651319180377778
1983	2.804918398857364
1984	2.4959627992263007
1985	2.2558751287508056
1986	0.983735201406719
1987	1.3388122507365023
1988	1.123850963972087
1989	1.2173007290811915
1990	1.3702151184426596
1991	1.0164699754543483
1992	1.0541418629576902
1993	1.0262691690957688
1994	0.8885907275587301
1995	0.9377474840167823
1996	1.158451743914932
1997	0.9777899853230385
1998	0.6237237003247922
1999	0.7557519458374012
2000	1.3495365937711932
2001	1.0838478247679875
2002	0.8307596955415635
2003	1.269037646072807
2004	1.5000542240816603
2005	1.8318103658941236
2006	1.3875191692682203
2007	1.3375462042126596
2008	2.227360222438809
2009	0.8458103506999064
2010	1.0807305913426888
2011	1.3745936512436971
2012	0.8437770485187299
2013	0.8455347238025592
2014	0.7945445422025676
2015	0.24201864784231455
2016	0.33951985127695167
2017	0.48706260730941847
2018	0.6881546430661885
2019	0.660024810054178
2020	0.3951226232047945
2021	1.5672015760836777