Year	% of GDP
1967	2.240199564157843
1968	2.5084258653296936
1969	2.2335826177167335
1970	0.5059487914168013
1971	1.1764802179169236
1972	3.8400568966082784
1973	4.487620726367965
1974	3.484492338224967
1975	2.387886692601228
1976	3.2857468023250007
1977	1.1126909941065184
1978	-0.5803172193470565
1979	0.19464685020634673
1980	-0.4380976230126952
1981	2.3310072506634123
1982	3.17090607271519
1983	3.3163407200660155
1984	4.43338179139069
1985	2.9529663189161464
1986	2.1498530014420436
1987	1.708454079089379
1988	2.7230514100950765
1989	3.8859531956380597
1990	2.5410136620200556
1991	2.2798413931163886
1992	1.8862817361809705
1993	3.734505018253943
1994	4.561550875180546
1995	5.6981283122052
1996	4.773099929425411
1997	6.016297538526317
1998	2.975068705808184
1999	3.5078224657816097
2000	1.7383682446761837
2001	2.2739263796492146
2002	2.3281860989862966
2003	5.153177129420848
2004	6.730822007752951
2005	6.065569375450507
2006	7.792695534723329
2007	5.898653199301891
2008	4.09327586137291
2009	5.744325770668239
2010	7.293455640105119
2011	8.988840873758443
2012	10.670112048413946
2013	9.746851587491712
2014	8.513304673449674
2015	5.246023216579968
2016	7.077664949290549
2017	8.91172270410113
2018	9.314881676879585
2019	6.921379561614663
2020	5.149374723721225
2021	12.132323581354896
2022	9.296273107431672
2023	10.101872446861803