Year	% of GDP
1971	0.3093560670685988
1972	0.2865469852564089
1973	0.2782931592953544
1974	0.14378093408732306
1975	0.3199208567113522
1976	0.27573606339249246
1977	0.3108930071173562
1978	0.37569057294384417
1979	0.5326267103842567
1980	0.3396861320583448
1981	0.33120271029347803
1982	0.13996975387573937
1983	0.514071070991715
1984	0.5359394378016568
1985	0.5542950244211351
1986	0.6276222755385129
1987	0.6809703311780801
1988	0.7808933353195002
1989	0.8092388239697871
1990	0.6726525663126093
1991	0.9949630604169072
1992	0.954662823374047
1993	1.0281140270686462
1994	1.0784535912213618
1995	0.9776983194635449
1996	1.0239590706628852
1997	1.143950525069091
1998	1.154538525405544
1999	1.08349330508393
2000	1.3184157123912827
2001	1.6001778028066758
2002	1.4671521283751803
2003	1.334226445257677
2004	1.2891652996136496
2005	1.5788015424722588
2006	1.6174048053405345
2007	1.4794678623319621
2008	1.326060625003783
2009	1.6190683867977795
2010	1.4017131544817345
2011	1.569960029812183
2012	1.5882191290795502
2013	1.6608333685960237
2014	1.5929239418041492
2015	1.3593093108361038
2016	1.0603061580087634
2017	1.2699973176585708
2018	1.998970429235659
2019	1.996650110430428
2020	2.2591994264558446
2021	3.1487869750548114