Year	% of GDP
1963	1.33857766816456
1964	1.9560211979696
1965	1.49870257318239
1966	1.69811311420267
1967	1.54138317032184
1968	1.05166425741106
1969	1.05566686542523
1970	1.68390804357819
1971	1.9256648624975
1972	2.77394647550345
1973	3.27477373725097
1974	4.58218530420597
1975	5.51838614923506
1976	4.65959973265935
1977	4.79628307115235
1978	4.90983142638205
1979	3.20561775823282
1980	2.74217639492941
1981	2.31537114636359
1982	2.4218825787599
1983	1.98651768140167
1984	1.58914283152556
1985	1.56243008193744
1986	2.23316387894274
1987	2.83273216768201
1988	2.37749790360976
1989	1.99782471519799
1990	1.80967978766194
1991	0.683666
1992	0.926181883239175
1993	1.2109955423477
1994	1.05685711120351
1995	1.06312014122331
2000	0.776252724448565
2001	0.543904071106774
2002	0.491387511931795
2003	0.795986809436435
2004	1.09523594047334
2005	1.20106600462354
2006	2.08326454059043
2007	2.64686802497463
2008	4.98896240520991
2009	5.30021801552843
2010	3.72391852892826
2011	4.02297417026833
2012	4.81133554812069
2013	5.24650133877784
2014	5.71798042102282
2015	6.28551112706926
2016	7.39278869907191
2017	5.46583969457502
2018	5.80440051574385
2019	6.00360308874013
2020	7.4504033573486
2021	7.22111419116418