Year	% of GDP
1970	1.1994312185498868
1971	1.3719682885359183
1972	1.6984526843018857
1973	2.486590211857521
1974	9.784631665189162
1975	8.424720559639276
1976	9.416407393159195
1977	9.228938440369825
1978	9.308669098167476
1979	12.82319422390177
1980	14.519248990984176
1981	10.003956863112043
1982	7.748354861068771
1983	7.982330311756527
1984	7.8290374561272005
1985	7.5478623624325785
1986	3.6091633763498963
1987	5.456715008959898
1988	4.207395951102495
1989	4.929348088775232
1990	6.028323283459377
1991	2.5982483660851696
1992	2.537420360422337
1993	2.8317259544838707
1994	2.386860480387569
1995	2.3342025135185023
1996	2.754968080811114
1997	2.3973022959350567
1998	1.4288828356012202
1999	2.4636936211000444
2000	4.206230201090403
2001	3.2027424978979306
2002	3.2433038176260274
2003	3.360851367889787
2004	4.136633647952115
2005	5.343181537987645
2006	5.488908716294783
2007	4.795724434569783
2008	5.6032035440325645
2009	3.0400260229728677
2010	3.4865891220229934
2011	4.186414857198901
2012	3.9374565885937627
2013	3.355881238445299
2014	2.9344018572768387
2015	1.3785048946122516
2016	1.1507041417356414
2017	1.5045191912968696
2018	2.043086219528418
2019	1.615991088471384
2020	0.792942866070344
2021	1.5808530154664173