Year	% of GDP
1970	1.185204261658539
1971	1.335163380002258
1972	0.31910220768222575
1973	0.6918107985624228
1974	0.47210124163226735
1975	0.9219810088486692
1976	0.0984988307339479
1977	0.4433188325630263
1978	0.673926103526011
1979	0.8320432620678136
1980	0.9267551921883431
1981	1.0438591752778679
1982	0.9190169892631422
1983	0.7786863575030561
1984	0.5339761198150831
1985	0.9128390498559089
1986	0.9779428356205138
1987	0.8545378149198558
1988	1.0781505698800273
1989	0.8619621522916062
1990	0.8111801401464072
1991	1.1686650936812957
1992	1.1935134052232748
1993	0.9410629324738384
1994	1.6739244541386016
1995	1.6493990004486985
1996	2.2716121430389182
1997	3.0165801949071915
1998	3.2292924757676866
1999	4.487637384224561
2000	3.5934691582562577
2001	3.347677203465979
2002	2.7150302517852967
2003	2.2906070163742593
2004	2.95880939364734
2005	2.781933048798876
2006	3.1251796423860836
2007	4.045227985426078
2008	3.7893992465384456
2009	2.702037967297039
2010	3.665713827781688
2011	4.074608992458293
2012	3.9208619834075518
2013	3.8487477926689144
2014	3.804788467718973
2015	5.08693250699215
2016	3.5097280375685687
2017	3.0432515748773303
2018	3.3110635963195145
2019	3.07590414144518
2020	2.536783399408084
2021	2.7990391353815647
2022	3.954966092529681