Year	% of GDP
1970	11.3056846306162
1971	10.2586939873198
1972	10.5544954168857
1973	12.1871472679366
1974	12.8824701550932
1975	8.76669463536668
1976	13.0463415483249
1977	11.8205279039526
1978	7.36403517044886
1979	8.54390010519843
1980	17.5232126190601
1981	17.6336519374628
1982	21.9234798953333
1983	18.4954742795728
1984	18.5461774937254
1985	18.4210849524549
1986	13.0703677485939
1987	9.15682329493256
1988	7.24663263322815
1989	10.9776643356615
1990	13.0529903629446
1991	3.99016938324224
1992	3.6452537591807
1993	3.64954662607288
1994	3.29866364172611
1995	3.79533707491117
1996	4.04042241145453
1997	4.10615710498008
1998	5.83623168206126
1999	3.39847601062594
2000	3.27487284480144
2001	6.76491230332295
2002	7.673552402895
2003	4.46007581951187
2004	8.86006911174684
2005	19.3863218849001
2006	25.6238205360937
2007	32.0888421353342
2008	38.3954688806903
2009	20.8447858815571
2010	33.2699514566613
2011	30.8504418081025
2012	21.4879263870309
2013	16.9330193063232
2014	13.1805355570468
2015	6.19132704450206
2016	8.04558334879584
2017	9.09659277147784
2018	2.808310001036
2019	2.61191416207025
2020	2.43870903966116
2021	11.4487520863931