Year	% of GDP
1970	3.723812784547804
1971	3.577972664606695
1972	3.7338535866495746
1973	5.099053390775382
1974	12.599554902905457
1975	10.072873315098976
1976	10.076678808608552
1977	11.971358121533813
1978	9.666515320390916
1979	18.524267126234072
1980	15.300832984265023
1981	7.014050200241321
1982	6.30567045565458
1983	7.3090655354014515
1984	7.155967189878436
1985	9.107415006000382
1986	6.9168638250389725
1987	7.459956613404819
1988	7.620846488621536
1989	9.740840880339888
1990	9.87603646820037
1991	7.8591719244082
1992	8.83475632385289
1993	11.09913001827242
1994	11.251231670318504
1995	12.317093511850956
1996	13.098392986443411
1997	11.683122008252852
1998	8.492890452986181
1999	6.754035798304357
2000	10.912438091811271
2001	9.577620927165272
2002	9.334019437694604
2003	9.163923952823467
2004	10.046049224845312
2005	12.47236502261514
2006	12.912116352498503
2007	13.951670862299476
2008	18.027895929076397
2009	10.477734163608117
2010	12.687905229310559
2011	15.268041400898808
2012	13.40826086493903
2013	11.483145639282828
2014	9.500668176122822
2015	6.31266959171621
2016	6.745625689430198
2017	8.224207128368139
2018	8.457165131207738
2019	7.505426562473268
2020	6.027126723057218
2021	9.973684815521136