Year	% of GDP
1970	0.8865427619253412
1971	0.9662621728361745
1972	1.235357998313534
1973	1.8290188079804675
1974	7.907042081219263
1975	6.793986398160344
1976	7.609031510722691
1977	7.5808020713354916
1978	7.341103093558525
1979	11.387771355851305
1980	11.645146819654931
1981	7.497643196248228
1982	5.69393156403259
1983	6.377661038499717
1984	6.539198772593417
1985	6.354100626274962
1986	2.9109762330284124
1987	4.3425293938903975
1988	3.3865795637587364
1989	4.440952128315056
1990	5.564116556327537
1991	2.6521201937395174
1992	2.6379102770572005
1993	3.1352171117273246
1994	2.7801471463013905
1995	2.7100393116183312
1996	3.096052721428767
1997	2.7030377038963054
1998	1.5579786132841607
1999	2.3416964117953603
2000	4.082657782795543
2001	3.096869312187222
2002	3.109383379965729
2003	3.2026568047349295
2004	3.97707095540641
2005	5.204111937509668
2006	5.345302306322023
2007	4.7369346478975345
2008	5.68668714035488
2009	2.990800088445356
2010	3.5154994922734484
2011	4.32991299852104
2012	3.972710400262517
2013	3.367627397664521
2014	2.874304970580566
2015	1.3021278203099367
2016	1.0649002020226435
2017	1.435499794172787
2018	1.9639475747788024
2019	1.5594787130918206
2020	0.7677026407228652
2021	1.5055308565270178