Year	% of GDP
1970	0.9015911374233627
1971	0.833647830382765
1972	0.49442083176804674
1973	0.6755278551015073
1974	0.6365155122708748
1975	0.7155082458057788
1976	0.3853015147043545
1977	0.34857109318041407
1978	0.4601161912727143
1979	0.3818960714064435
1980	0.34488687348452085
1981	0.5148600087779563
1982	0.437219963520404
1983	0.41653934523683767
1984	0.39005613634053626
1985	0.4807800682963645
1986	0.45433658279003614
1987	0.4906662138516645
1988	0.7026477298655547
1989	0.7974481668547
1990	0.6899284934201553
1991	0.9945538789189261
1992	1.1339941596486582
1993	1.5132392879040195
1994	1.8481767217582001
1995	1.8362837382636412
1996	2.1098374244001543
1997	2.6318310461571763
1998	2.6679417201754383
1999	3.0534939108297405
2000	2.565763688025542
2001	2.7055292773796267
2002	2.4313563190271257
2003	2.35336778379231
2004	2.7314848079686826
2005	3.072400405399645
2006	3.4293505220024296
2007	3.8335209723833934
2008	3.64799650739446
2009	2.57981680152155
2010	3.076587429986935
2011	3.0848585626019793
2012	2.6953847197459475
2013	2.6997304336397305
2014	2.3735043112027028
2015	2.3652115903572533
2016	2.127777207183963
2017	1.8822887737367648
2018	1.9908315355893662
2019	1.846678835948455
2020	1.7832660059376702
2021	2.226066895770589
2022	1.5548201501368315