Year	% of GDP
1970	6.539008924113296
1971	8.380161073692175
1972	8.95543669111629
1973	2.159100687618919
1974	0.7689585416714417
1975	1.1162086762542531
1976	1.5823174340768353
1977	0.9925314373939423
1978	1.6254774530919096
1979	4.520763342727879
1980	2.8944543222003927
1981	3.3476791610888
1982	3.0199570696283637
1983	1.3066168543845533
1984	2.6728239202657806
1985	0.3440848324514991
1986	0.5007251847092836
1987	0.41657613768961493
1988	1.433142785112534
1989	0.4328140107136555
1990	0.5572838074026069
1991	0.36746417593811515
1992	0.7383750638732753
1993	0.4556740151019517
1994	0.6019490409059395
1995	2.877965523137362
1996	0.6700025323912074
1997	1.1288696047614926
1998	1.03513021371689
1999	1.6105138394451066
2000	2.408790452851773
2001	2.99574106858733
2002	7.350499076130694
2003	5.7548306152048605
2004	6.628959210335317
2005	10.212368002730726
2006	8.115751763666026
2007	10.188798547199076
2008	12.840713702316611
2009	7.970079027097999
2010	9.379462567005149
2011	9.856694093110043
2012	11.422914767318474
2013	2.217758605716384
2014	15.995613010099147
2015	14.530000694799192
2016	11.499095043257766
2017	1.8294711569208724
2018	4.711003073662046
2019	4.012754634603528
2020	5.48354288044231
2021	4.827537714780732
2022	3.4242625127303383