Year	% of GDP
1970	2.66520628395588
1971	3.68919626622523
1972	3.94244402210158
1973	6.7792149463876
1974	27.0601076564267
1975	25.329052429758
1976	26.197454730186
1977	18.6436215890676
1978	18.203841789284
1979	34.6172963287602
1980	31.7095191215405
1981	26.5160240191568
1982	10.1444184759994
1983	13.4510583620697
1984	14.8053270922348
1985	15.6372870423073
1986	10.2376806482195
1987	14.455249019627
1988	11.6783599395421
1989	17.7989659641862
1990	20.5879235091486
1991	11.5073668472607
1992	10.8205959394007
1993	12.3546906500105
1994	11.4174897882619
1995	12.3694001900686
1996	13.9994543672843
1997	12.4304855931719
1998	6.55905261383883
1999	10.4893735592622
2000	14.0818626378959
2001	10.1729837328617
2002	11.8982860535807
2003	10.6549102773187
2004	10.8323099394832
2005	16.0670386642135
2006	18.3898478452635
2007	15.9606779203426
2008	15.2710339879178
2009	16.147506232455
2010	13.5019281289188
2011	21.1902057775941
2012	19.0454490519432
2013	18.9417880426583
2014	15.5987828212435
2015	7.5354554955632
2016	4.12214241273861
2017	5.76137730000007
2018	11.2320374302733
2019	11.0689882994292
2020	5.88215476519225
2021	7.85936855870429