Year	% of GDP
1971	0.06300786153082702
1972	0.04800991593767932
1973	0.052906735649042545
1974	0.05405938618062832
1975	0.07323555718398259
1976	0.08725062622512471
1977	0.09867628393758304
1978	0.07459051184784023
1979	0.07241570838798479
1980	0.08774578856423462
1981	0.018726651128431977
1982	0.005826085406305417
1983	0.05048284654569361
1984	0.03561563546582687
1985	0.04100917159437656
1986	0.09250443988421737
1987	0.09113372864919979
1988	0.06980850564072194
1989	0.12298401016017237
1990	0.31894236809834664
1991	0.21631307140344302
1992	0.18867114020763534
1993	0.30964170786960726
1994	0.33279352654376027
1995	0.41377684682767335
1996	0.3823301418384475
1997	0.37971723534912905
1998	0.20570866706160001
1999	0.27588479765924506
2000	0.6461291840659953
2001	0.9536319106158332
2002	0.8210146034210435
2003	0.922767256823441
2004	0.8701577975444275
2005	0.7798430362755855
2006	0.9757633855583508
2007	0.7821595660546384
2008	0.9012169120196263
2009	0.7294048663584066
2010	0.7171087156109172
2011	0.9455651976781407
2012	0.9537247206653945
2013	0.8106434349215914
2014	0.737540392051734
2015	0.6732019148069134
2016	0.49847325275943954
2017	0.5763311775143019
2018	0.7624906667079506
2019	0.7105944648123386
2020	0.5389762620390137
2021	0.9767051475559464