Year	% of GDP
1970	1.0922872908384382
1971	1.2820319353386398
1972	0.22934436370421898
1973	0.6124284558696133
1974	0.38286627041839827
1975	0.9149120671200468
1976	0.09096161780143783
1977	0.4293132256390235
1978	0.6767503324438316
1979	0.8320044207523175
1980	0.928778173386171
1981	1.0398916570460464
1982	0.9218345246889604
1983	0.7826521312137397
1984	0.5369967711476014
1985	0.92324841557678
1986	0.987047988903873
1987	0.8577700535651487
1988	1.0758594941323025
1989	0.8625643854363656
1990	0.803291390300014
1991	1.156493159151164
1992	1.2004272869778603
1993	0.9431025646955452
1994	1.681244172938382
1995	1.6481583952247016
1996	2.2686487357010963
1997	3.0088710703481687
1998	3.2299227130837553
1999	4.477918551063249
2000	3.6040900310027904
2001	3.3711092142521077
2002	2.705125393003295
2003	2.2855077377688477
2004	2.966171925901505
2005	2.781339743893599
2006	2.3453868172609242
2007	3.3204326081398188
2008	3.34699667260636
2009	2.2112240038747073
2010	3.2547853986924213
2011	3.5449557213522622
2012	3.572262744333354
2013	3.2836836403339835
2014	3.0768135596085084
2015	3.479768061404834
2016	3.4595459435599434
2017	2.9976190863567727
2018	3.3102767963802306
2019	3.057815350047831
2020	2.373019161755063
2021	2.8204388273534002
2022	3.529946873967944